implementation of tantivy datastore + updated RPC calls to deal with tantivy + docs

Cargo.toml

@@ -1,8 +1,8 @@
 [package]
 name = "herodb"
 version = "0.0.1"
-authors = ["Pin Fang <fpfangpin@hotmail.com>"]
-edition = "2021"
+authors = ["ThreeFold Tech NV"]
+edition = "2024"
 
 [dependencies]
 anyhow = "1.0.59"
@@ -23,7 +23,9 @@ sha2 = "0.10"
 age = "0.10"
 secrecy = "0.8"
 ed25519-dalek = "2"
+x25519-dalek = "2"
 base64 = "0.22"
+jsonrpsee = { version = "0.26.0", features = ["http-client", "ws-client", "server", "macros"] }
 tantivy = "0.25.0"
 
 [dev-dependencies]

README.md

@@ -17,6 +17,8 @@ The main purpose of HeroDB is to offer a lightweight, embeddable, and Redis-comp
 - **Expiration**: Time-to-live (TTL) functionality for keys.
 - **Scanning**: Cursor-based iteration for keys and hash fields (`SCAN`, `HSCAN`).
 - **AGE Cryptography Commands**: HeroDB-specific extensions for cryptographic operations.
+- **Symmetric Encryption**: Stateless symmetric encryption using XChaCha20-Poly1305.
+- **Admin Database 0**: Centralized control for database management, access control, and per-database encryption.
 
 ## Quick Start
 
@@ -30,31 +32,14 @@ cargo build --release
 
 ### Running HeroDB
 
-You can start HeroDB with different backends and encryption options:
-
-#### Default `redb` Backend
+Launch HeroDB with the required `--admin-secret` flag, which encrypts the admin database (DB 0) and authorizes admin access. Optional flags include `--dir` for the database directory, `--port` for the TCP port (default 6379), `--sled` for the sled backend, and `--enable-rpc` to start the JSON-RPC management server on port 8080.
 
+Example:
 ```bash
-./target/release/herodb --dir /tmp/herodb_redb --port 6379
+./target/release/herodb --dir /tmp/herodb --admin-secret myadminsecret --port 6379 --enable-rpc
 ```
 
-#### `sled` Backend
-
-```bash
-./target/release/herodb --dir /tmp/herodb_sled --port 6379 --sled
-```
-
-#### `redb` with Encryption
-
-```bash
-./target/release/herodb --dir /tmp/herodb_encrypted --port 6379 --encrypt --key mysecretkey
-```
-
-#### `sled` with Encryption
-
-```bash
-./target/release/herodb --dir /tmp/herodb_sled_encrypted --port 6379 --sled --encrypt --key mysecretkey
-```
+For detailed launch options, see [Basics](docs/basics.md).
 
 ## Usage with Redis Clients
 
@@ -76,10 +61,24 @@ redis-cli -p 6379 SCAN 0 MATCH user:* COUNT 10
 #    2) 1) "user:1"
 ```
 
+## Cryptography
+
+HeroDB supports asymmetric encryption/signatures via AGE commands (X25519 for encryption, Ed25519 for signatures) in stateless or key-managed modes, and symmetric encryption via SYM commands. Keys are persisted in the admin database (DB 0) for managed modes.
+
+For details, see [AGE Cryptography](docs/age.md) and [Basics](docs/basics.md).
+
+## Database Management
+
+Databases are managed via JSON-RPC API, with metadata stored in the encrypted admin database (DB 0). Databases are public by default upon creation; use RPC to set them private, requiring access keys for SELECT operations (read or readwrite based on permissions). This includes per-database encryption keys, access control, and lifecycle management.
+
+For examples, see [JSON-RPC Examples](docs/rpc_examples.md) and [Admin DB 0 Model](docs/admin.md).
+
 ## Documentation
 
 For more detailed information on commands, features, and advanced usage, please refer to the documentation:
 
 - [Basics](docs/basics.md)
 - [Supported Commands](docs/cmds.md)
-- [AGE Cryptography](docs/age.md)
+- [AGE Cryptography](docs/age.md)
+- [Admin DB 0 Model (access control, per-db encryption)](docs/admin.md)
+- [JSON-RPC Examples (management API)](docs/rpc_examples.md)

docs/admin.md

@@ -0,0 +1,181 @@
+# Admin Database 0 (`0.db`)
+
+This page explains what the Admin Database `DB 0` is, why HeroDB uses it, and how to work with it as a developer and end-user. It’s a practical guide covering how databases are created, listed, secured with access keys, and encrypted using per-database secrets.
+
+## What is `DB 0`?
+
+`DB 0` is the control-plane for a HeroDB instance. It stores metadata for all user databases (`db_id >= 1`) so the server can:
+- Know which databases exist (without scanning the filesystem)
+- Enforce access control (public/private with access keys)
+- Enforce per-database encryption (whether a given database must be opened encrypted and with which write-only key)
+
+`DB 0` itself is always encrypted with the admin secret (the process-level secret provided at startup).
+
+## How `DB 0` is created and secured
+
+- `DB 0` lives at `<base_dir>/0.db`
+- It is always encrypted using the `admin secret` provided at process startup (using the `--admin-secret <secret>` CLI flag)
+- Only clients that provide the correct admin secret can `SELECT 0` (see “`SELECT` + `KEY`” below)
+
+At startup, the server bootstraps `DB 0` (initializes counters and structures) if it’s missing.
+
+## Metadata stored in `DB 0`
+
+Keys in `DB 0` (internal layout, but useful to understand how things work):
+
+- `admin:next_id`
+  - String counter holding the next id to allocate (initialized to `"1"`)
+
+- `admin:dbs`
+  - A hash acting as a set of existing database ids
+  - field = id (as string), value = `"1"`
+
+- `meta:db:<id>`
+  - A hash holding db-level metadata
+  - field `public` = `"true"` or `"false"` (defaults to `true` if missing)
+
+- `meta:db:<id>:keys`
+  - A hash mapping access-key hashes to the string `Permission:created_at_seconds`
+  - Examples: `Read:1713456789` or `ReadWrite:1713456789`
+  - The plaintext access keys are never stored; only their `SHA-256` hashes are kept
+
+- `meta:db:<id>:enc`
+   - A string holding the per-database encryption key used to open `<id>.db` encrypted
+   - This value is write-only from the perspective of the management APIs (it’s set at creation and never returned)
+
+- `age:key:<name>`
+   - Base64-encoded X25519 recipient (public encryption key) for named AGE keys
+- `age:privkey:<name>`
+   - Base64-encoded X25519 identity (secret encryption key) for named AGE keys
+- `age:signpub:<name>`
+   - Base64-encoded Ed25519 verify public key for named AGE keys
+- `age:signpriv:<name>`
+   - Base64-encoded Ed25519 signing secret key for named AGE keys
+
+> You don’t need to manipulate these keys directly; they’re listed to clarify the model. AGE keys are managed via AGE commands.
+
+## Database lifecycle
+
+1) Create a database (via JSON-RPC)
+- The server allocates an id from `admin:next_id`, registers it in `admin:dbs`, and defaults the database to `public=true`
+- If you pass an optional `encryption_key` during creation, the server persists it in `meta:db:<id>:enc`. That database will be opened in encrypted mode from then on
+
+2) Open and use a database
+- Clients select a database over RESP using `SELECT`
+- Authorization and encryption state are enforced using `DB 0` metadata
+
+3) Delete database files
+- Removing `<id>.db` removes the physical storage
+- `DB 0` remains the source of truth for existence and may be updated by future management methods as the system evolves
+
+## Access control model
+
+- Public database (default)
+  - Anyone can `SELECT <id>` with no key, and will get `ReadWrite` permission
+- Private database
+  - You must provide an access key when selecting the database
+  - The server hashes the provided key with `SHA-256` and checks membership in `meta:db:<id>:keys`
+  - Permissions are `Read` or `ReadWrite` depending on how the key was added
+- Admin `DB 0`
+  - Requires the exact admin secret as the `KEY` argument to `SELECT 0`
+  - Permission is `ReadWrite` when the secret matches
+
+### How to select databases with optional `KEY`
+
+- Public DB (no key required)
+  - `SELECT <id>`
+
+- Private DB (access key required)
+  - `SELECT <id> KEY <plaintext_key>`
+
+- Admin `DB 0` (admin secret required)
+  - `SELECT 0 KEY <admin_secret>`
+
+Examples (using `redis-cli`):
+```bash
+# Public database
+redis-cli -p $PORT SELECT 1
+# → OK
+
+# Private database
+redis-cli -p $PORT SELECT 2 KEY my-db2-access-key
+# → OK
+
+# Admin DB 0
+redis-cli -p $PORT SELECT 0 KEY my-admin-secret
+# → OK
+```
+
+## Per-database encryption
+
+- At database creation, you can provide an optional per-db encryption key
+- If provided, the server persists that key in `DB 0` as `meta:db:<id>:enc`
+- When you later open the database, the engine checks whether `meta:db:<id>:enc` exists to decide if it must open `<id>.db` in encrypted mode
+- The per-db key is not returned by RPC—it is considered write-only configuration data
+
+Operationally:
+- Create with encryption: pass a non-null `encryption_key` to the `createDatabase` RPC
+- Open later: simply `SELECT` the database; encryption is transparent to clients
+
+## Management via JSON-RPC
+
+You can manage databases using the management RPC (namespaced `herodb.*`). Typical operations:
+- `createDatabase(backend, config, encryption_key?)`
+  - Allocates a new id, sets optional encryption key
+- `listDatabases()`
+  - Lists database ids and info (including whether storage is currently encrypted)
+- `getDatabaseInfo(db_id)`
+  - Returns details: backend, encrypted flag, size on disk, `key_count`, timestamps, etc.
+- `addAccessKey(db_id, key, permissions)`
+  - Adds a `Read` or `ReadWrite` access key (permissions = `"read"` | `"readwrite"`)
+- `listAccessKeys(db_id)`
+  - Returns hashes and permissions; you can use these hashes to delete keys
+- `deleteAccessKey(db_id, key_hash)`
+  - Removes a key by its hash
+- `setDatabasePublic(db_id, public)`
+  - Toggles public/private
+
+Copyable JSON examples are provided in the [RPC examples documentation](./rpc_examples.md).
+
+## Typical flows
+
+1) Public, unencrypted database
+- Create a new database without an encryption key
+- Clients can immediately `SELECT <id>` without a key
+- You can later make it private and add keys if needed
+
+2) Private, encrypted database
+- Create passing an `encryption_key`
+- Mark it private (`setDatabasePublic false`) and add access keys
+- Clients must use `SELECT <id> KEY <plaintext_access_key>`
+- Storage opens in encrypted mode automatically
+
+## Security notes
+
+- Only `SHA-256` hashes of access keys are stored in `DB 0`; keep plaintext keys safe on the client side
+- The per-db encryption key is never exposed via the API after it is set
+- The admin secret must be kept secure; anyone with it can `SELECT 0` and perform administrative actions
+
+## Troubleshooting
+
+- `ERR invalid access key` when selecting a private db
+  - Ensure you passed the `KEY` argument: `SELECT <id> KEY <plaintext_key>`
+  - If you recently added the key, confirm the permissions and that you used the exact plaintext (hash must match)
+
+- `Database X not found`
+  - The id isn’t registered in `DB 0` (`admin:dbs`). Use the management APIs to create or list databases
+
+- Cannot `SELECT 0`
+  - The `KEY` must be the exact admin secret passed at server startup
+
+## Reference
+
+- Admin metadata lives in `DB 0` (`0.db`) and controls:
+  - Existence: `admin:dbs`
+  - Access: `meta:db:<id>.public` and `meta:db:<id>:keys`
+  - Encryption: `meta:db:<id>:enc`
+
+For command examples and management payloads:
+- RESP command basics: `docs/basics.md`
+- Supported commands: `docs/cmds.md`
+- JSON-RPC examples: `docs/rpc_examples.md`

docs/age.md

@@ -1,188 +1,96 @@
-# HeroDB AGE usage: Stateless vs Key‑Managed
+# HeroDB AGE Cryptography
 
-This document explains how to use the AGE cryptography commands exposed by HeroDB over the Redis protocol in two modes:
-- Stateless (ephemeral keys; nothing stored on the server)
-- Key‑managed (server‑persisted, named keys)
+HeroDB provides AGE-based asymmetric encryption and digital signatures over the Redis protocol using X25519 for encryption and Ed25519 for signatures. Keys can be used in stateless (ephemeral) or key-managed (persistent, named) modes.
 
-If you are new to the codebase, the exact tests that exercise these behaviors are:
-- [rust.test_07_age_stateless_suite()](herodb/tests/usage_suite.rs:495)
-- [rust.test_08_age_persistent_named_suite()](herodb/tests/usage_suite.rs:555)
+In key-managed mode, HeroDB uses a unified keypair concept: a single Ed25519 signing key is deterministically derived into X25519 keys for encryption, allowing one keypair to handle both encryption and signatures transparently.
 
-Implementation entry points:
-- [herodb/src/age.rs](herodb/src/age.rs)
-- Dispatch from [herodb/src/cmd.rs](herodb/src/cmd.rs)
+## Cryptographic Algorithms
 
-Note: Database-at-rest encryption flags in the test harness are unrelated to AGE commands; those flags control storage-level encryption of DB files. See the harness near [rust.start_test_server()](herodb/tests/usage_suite.rs:10).
+### X25519 (Encryption)
+- Elliptic-curve Diffie-Hellman key exchange for symmetric key derivation.
+- Used for encrypting/decrypting messages.
 
-## Quick start
+### Ed25519 (Signatures)
+- EdDSA digital signatures for message authentication.
+- Used for signing/verifying messages.
 
-Assuming the server is running on localhost on some $PORT:
+### Key Derivation
+Ed25519 signing keys are deterministically converted to X25519 keys for encryption. This enables a single keypair to support both operations without additional keys. Derivation uses the Ed25519 secret scalar clamped for X25519.
+
+In named keypairs, Ed25519 keys are stored, and X25519 keys are derived on-demand and cached.
+
+## Stateless Mode (Ephemeral Keys)
+No server-side storage; keys are provided with each command.
+
+Available commands:
+- `AGE GENENC`: Generate ephemeral X25519 keypair. Returns `[recipient, identity]`.
+- `AGE GENSIGN`: Generate ephemeral Ed25519 keypair. Returns `[verify_pub, sign_secret]`.
+- `AGE ENCRYPT <recipient> <message>`: Encrypt message. Returns base64 ciphertext.
+- `AGE DECRYPT <identity> <ciphertext_b64>`: Decrypt ciphertext. Returns plaintext.
+- `AGE SIGN <sign_secret> <message>`: Sign message. Returns base64 signature.
+- `AGE VERIFY <verify_pub> <message> <signature_b64>`: Verify signature. Returns 1 (valid) or 0 (invalid).
+
+Example:
 ```bash
-~/code/git.ourworld.tf/herocode/herodb/herodb/build.sh
-~/code/git.ourworld.tf/herocode/herodb/target/release/herodb --dir /tmp/data --debug --$PORT 6381 --encryption-key 1234 --encrypt
-```
+redis-cli AGE GENENC
+# → 1) "age1qz..."  # recipient (X25519 public)
+#    2) "AGE-SECRET-KEY-1..."  # identity (X25519 secret)
 
+redis-cli AGE ENCRYPT "age1qz..." "hello"
+# → base64_ciphertext
 
-```bash
-export PORT=6381
-# Generate an ephemeral keypair and encrypt/decrypt a message (stateless mode)
-redis-cli -p $PORT AGE GENENC
-# → returns an array: [recipient, identity]
-
-redis-cli -p $PORT AGE ENCRYPT <recipient> "hello world"
-# → returns ciphertext (base64 in a bulk string)
-
-redis-cli -p $PORT AGE DECRYPT <identity> <ciphertext_b64>
-# → returns "hello world"
-```
-
-For key‑managed mode, generate a named key once and reference it by name afterwards:
-
-```bash
-redis-cli -p $PORT AGE KEYGEN app1
-# → persists encryption keypair under name "app1"
-
-redis-cli -p $PORT AGE ENCRYPTNAME app1 "hello"
-redis-cli -p $PORT AGE DECRYPTNAME app1 <ciphertext_b64>
-```
-
-## Stateless AGE (ephemeral)
-
-Characteristics
-
-- No server‑side storage of keys.
-- You pass the actual key material with every call.
-- Not listable via AGE LIST.
-
-Commands and examples
-
-1) Ephemeral encryption keys
-
-```bash
-# Generate an ephemeral encryption keypair 
-redis-cli -p $PORT AGE GENENC
-# Example output (abridged):
-# 1) "age1qz..."          # recipient (public key) = can be used by others e.g. to verify what I sign
-# 2) "AGE-SECRET-KEY-1..." # identity (secret) = is like my private, cannot lose this one
-
-# Encrypt with the recipient public key
-redis-cli -p $PORT AGE ENCRYPT "age1qz..." "hello world"
-
-# → returns bulk string payload: base64 ciphertext (encrypted content)
-
-# Decrypt with the identity (secret) in other words your private key
-redis-cli -p $PORT AGE DECRYPT "AGE-SECRET-KEY-1..." "<ciphertext_b64>"
-# → "hello world"
-```
-
-2) Ephemeral signing keys
-
-> ? is this same as my private key
-
-```bash
-
-# Generate an ephemeral signing keypair
-redis-cli -p $PORT AGE GENSIGN
-# Example output:
-# 1) "<verify_pub_b64>"
-# 2) "<sign_secret_b64>"
-
-# Sign a message with the secret
-redis-cli -p $PORT AGE SIGN "<sign_secret_b64>" "msg"
-# → returns "<signature_b64>"
-
-# Verify with the public key
-redis-cli -p $PORT AGE VERIFY "<verify_pub_b64>" "msg" "<signature_b64>"
-# → 1 (valid) or 0 (invalid)
-```
-
-When to use
-- You do not want the server to store private keys.
-- You already manage key material on the client side.
-- You need ad‑hoc operations without persistence.
-
-Reference test: [rust.test_07_age_stateless_suite()](herodb/tests/usage_suite.rs:495)
-
-## Key‑managed AGE (persistent, named)
-
-Characteristics
-- Server generates and persists keypairs under a chosen name.
-- Clients refer to keys by name; raw secrets are not supplied on each call.
-- Keys are discoverable via AGE LIST.
-
-Commands and examples
-
-1) Named encryption keys
-
-```bash
-# Create/persist a named encryption keypair
-redis-cli -p $PORT AGE KEYGEN app1
-# → returns [recipient, identity] but also stores them under name "app1"
-
-> TODO: should not return identity (security, but there can be separate function to export it e.g. AGE EXPORTKEY app1)
-
-# Encrypt using the stored public key
-redis-cli -p $PORT AGE ENCRYPTNAME app1 "hello"
-# → returns bulk string payload: base64 ciphertext
-
-# Decrypt using the stored secret
-redis-cli -p $PORT AGE DECRYPTNAME app1 "<ciphertext_b64>"
+redis-cli AGE DECRYPT "AGE-SECRET-KEY-1..." base64_ciphertext
 # → "hello"
 ```
 
-2) Named signing keys
+## Key-Managed Mode (Persistent Named Keys)
+Keys are stored server-side under names. Supports unified keypairs for both encryption and signatures.
 
+Available commands:
+- `AGE KEYGEN <name>`: Generate and store unified keypair. Returns `[recipient, identity]` in age format.
+- `AGE SIGNKEYGEN <name>`: Generate and store Ed25519 signing keypair. Returns `[verify_pub, sign_secret]`.
+- `AGE ENCRYPTNAME <name> <message>`: Encrypt with named key. Returns base64 ciphertext.
+- `AGE DECRYPTNAME <name> <ciphertext_b64>`: Decrypt with named key. Returns plaintext.
+- `AGE SIGNNAME <name> <message>`: Sign with named key. Returns base64 signature.
+- `AGE VERIFYNAME <name> <message> <signature_b64>`: Verify with named key. Returns 1 or 0.
+- `AGE LIST`: List all stored key names. Returns sorted array of names.
+
+### AGE LIST Output
+Returns a flat, deduplicated, sorted array of key names (strings). Each name corresponds to a stored keypair, which may include encryption keys (X25519), signing keys (Ed25519), or both.
+
+Output format: `["name1", "name2", ...]`
+
+Example:
 ```bash
-# Create/persist a named signing keypair
-redis-cli -p $PORT AGE SIGNKEYGEN app1
-# → returns [verify_pub_b64, sign_secret_b64] and stores under name "app1"
-
-> TODO: should not return sign_secret_b64 (for security, but there can be separate function to export it e.g. AGE EXPORTSIGNKEY app1)
-
-# Sign using the stored secret
-redis-cli -p $PORT AGE SIGNNAME app1 "msg"
-# → returns "<signature_b64>"
-
-# Verify using the stored public key
-redis-cli -p $PORT AGE VERIFYNAME app1 "msg" "<signature_b64>"
-# → 1 (valid) or 0 (invalid)
+redis-cli AGE LIST
+# →  1) "<named_keypair_1>"
+#    2) "<named_keypair_2>"
 ```
 
-3) List stored AGE keys
+For unified keypairs (from `AGE KEYGEN`), the name handles both encryption (derived X25519) and signatures (stored Ed25519) transparently.
 
+Example with named keys:
 ```bash
-redis-cli -p $PORT AGE LIST
-# Example output includes labels such as "encpub" and your key names (e.g., "app1")
+redis-cli AGE KEYGEN app1
+# →  1) "age1..."  # recipient
+#    2) "AGE-SECRET-KEY-1..."  # identity
+
+redis-cli AGE ENCRYPTNAME app1 "secret message"
+# → base64_ciphertext
+
+redis-cli AGE DECRYPTNAME app1 base64_ciphertext
+# → "secret message"
+
+redis-cli AGE SIGNNAME app1 "message"
+# → base64_signature
+
+redis-cli AGE VERIFYNAME app1 "message" base64_signature
+# → 1
 ```
 
-When to use
-- You want centralized key storage/rotation and fewer secrets on the client.
-- You need names/labels for workflows and can trust the server with secrets.
-- You want discoverability (AGE LIST) and simpler client commands.
+## Choosing a Mode
+- **Stateless**: For ad-hoc operations without persistence; client manages keys.
+- **Key-managed**: For centralized key lifecycle; server stores keys for convenience and discoverability.
 
-Reference test: [rust.test_08_age_persistent_named_suite()](herodb/tests/usage_suite.rs:555)
-
-## Choosing a mode
-
-- Prefer Stateless when:
-  - Minimizing server trust for secret material is the priority.
-  - Clients already have a secure mechanism to store/distribute keys.
-- Prefer Key‑managed when:
-  - Centralized lifecycle, naming, and discoverability are beneficial.
-  - You plan to integrate rotation, ACLs, or auditability on the server side.
-
-## Security notes
-
-- Treat identities and signing secrets as sensitive; avoid logging them.
-- For key‑managed mode, ensure server storage (and backups) are protected.
-- AGE operations here are application‑level crypto and are distinct from database-at-rest encryption configured in the test harness.
-
-## Repository pointers
-
-- Stateless examples in tests: [rust.test_07_age_stateless_suite()](herodb/tests/usage_suite.rs:495)
-- Key‑managed examples in tests: [rust.test_08_age_persistent_named_suite()](herodb/tests/usage_suite.rs:555)
-- AGE implementation: [herodb/src/age.rs](herodb/src/age.rs)
-- Command dispatch: [herodb/src/cmd.rs](herodb/src/cmd.rs)
-- Bash demo: [herodb/examples/age_bash_demo.sh](herodb/examples/age_bash_demo.sh)
-- Rust persistent demo: [herodb/examples/age_persist_demo.rs](herodb/examples/age_persist_demo.rs)
-- Additional notes: [herodb/instructions/encrypt.md](herodb/instructions/encrypt.md)
+Implementation: [herodb/src/age.rs](herodb/src/age.rs) <br> 
+Tests: [herodb/tests/usage_suite.rs](herodb/tests/usage_suite.rs)

docs/basics.md

@@ -1,4 +1,58 @@
-Here's an expanded version of the cmds.md documentation to include the list commands:
+# HeroDB Basics
+
+## Launching HeroDB
+
+To launch HeroDB, use the binary with required and optional flags. The `--admin-secret` flag is mandatory, encrypting the admin database (DB 0) and authorizing admin access.
+
+### Launch Flags
+- `--dir <path>`: Directory for database files (default: current directory).
+- `--port <port>`: TCP port for Redis protocol (default: 6379).
+- `--debug`: Enable debug logging.
+- `--sled`: Use Sled backend (default: Redb).
+- `--enable-rpc`: Start JSON-RPC management server on port 8080.
+- `--rpc-port <port>`: Custom RPC port (default: 8080).
+- `--admin-secret <secret>`: Required secret for DB 0 encryption and admin access.
+
+Example:
+```bash
+./target/release/herodb --dir /tmp/herodb --admin-secret mysecret --port 6379 --enable-rpc
+```
+
+Deprecated flags (`--encrypt`, `--encryption-key`) are ignored for data DBs; per-database encryption is managed via RPC.
+
+## Admin Database (DB 0)
+
+DB 0 acts as the administrative database instance, storing metadata for all user databases (IDs >= 1). It controls existence, access control, and per-database encryption. DB 0 is always encrypted with the `--admin-secret`.
+
+When creating a new database, DB 0 allocates an ID, registers it, and optionally stores a per-database encryption key (write-only). Databases are public by default; use RPC to set them private, requiring access keys for SELECT (read or readwrite based on permissions). Keys are persisted in DB 0 for managed AGE operations.
+
+Access DB 0 with `SELECT 0 KEY <admin-secret>`.
+
+## Symmetric Encryption
+
+HeroDB supports stateless symmetric encryption via SYM commands, using XChaCha20-Poly1305 AEAD.
+
+Commands:
+- `SYM KEYGEN`: Generate 32-byte key. Returns base64-encoded key.
+- `SYM ENCRYPT <key_b64> <message>`: Encrypt message. Returns base64 ciphertext.
+- `SYM DECRYPT <key_b64> <ciphertext_b64>`: Decrypt. Returns plaintext.
+
+Example:
+```bash
+redis-cli SYM KEYGEN
+# → base64_key
+
+redis-cli SYM ENCRYPT base64_key "secret"
+# → base64_ciphertext
+
+redis-cli SYM DECRYPT base64_key base64_ciphertext
+# → "secret"
+```
+
+## RPC Options
+
+Enable the JSON-RPC server with `--enable-rpc` for database management. Methods include creating databases, managing access keys, and setting encryption. See [JSON-RPC Examples](./rpc_examples.md) for payloads.
+
 # HeroDB Commands
 
 HeroDB implements a subset of Redis commands over the Redis protocol. This document describes the available commands and their usage.
@@ -575,6 +629,29 @@ redis-cli -p $PORT AGE LIST
 #    2) "keyname2"
 ```
 
+## SYM Commands
+
+### SYM KEYGEN
+Generate a symmetric encryption key.
+```bash
+redis-cli -p $PORT SYM KEYGEN
+# → base64_encoded_32byte_key
+```
+
+### SYM ENCRYPT
+Encrypt a message with a symmetric key.
+```bash
+redis-cli -p $PORT SYM ENCRYPT <key_b64> "message"
+# → base64_encoded_ciphertext
+```
+
+### SYM DECRYPT
+Decrypt a ciphertext with a symmetric key.
+```bash
+redis-cli -p $PORT SYM DECRYPT <key_b64> <ciphertext_b64>
+# → decrypted_message
+```
+
 ## Server Information Commands
 
 ### INFO
@@ -621,3 +698,27 @@ This expanded documentation includes all the list commands that were implemented
 10. LINDEX - get element by index
 11. LRANGE - get range of elements
 
+
+## Updated Database Selection and Access Keys
+
+HeroDB uses an `Admin DB 0` to control database existence, access, and encryption. Access to data DBs can be public (no key) or private (requires a key). See detailed model in `docs/admin.md`.
+
+Examples:
+
+```bash
+# Public database (no key required)
+redis-cli -p $PORT SELECT 1
+# → OK
+```
+
+```bash
+# Private database (requires access key)
+redis-cli -p $PORT SELECT 2 KEY my-db2-access-key
+# → OK
+```
+
+```bash
+# Admin DB 0 (requires admin secret)
+redis-cli -p $PORT SELECT 0 KEY my-admin-secret
+# → OK
+```

docs/cmds.md

@@ -122,4 +122,27 @@ redis-cli -p 6379 --rdb dump.rdb
 
 # Import to sled
 redis-cli -p 6381 --pipe < dump.rdb
+```
+
+## Authentication and Database Selection
+
+HeroDB uses an `Admin DB 0` to govern database existence, access and per-db encryption. Access control is enforced via `Admin DB 0` metadata. See the full model in `docs/admin.md`.
+
+Examples:
+```bash
+# Public database (no key required)
+redis-cli -p $PORT SELECT 1
+# → OK
+```
+
+```bash
+# Private database (requires access key)
+redis-cli -p $PORT SELECT 2 KEY my-db2-access-key
+# → OK
+```
+
+```bash
+# Admin DB 0 (requires admin secret)
+redis-cli -p $PORT SELECT 0 KEY my-admin-secret
+# → OK
 ```

docs/rpc_examples.md

@@ -0,0 +1,141 @@
+# HeroDB JSON-RPC Examples
+
+These examples show full JSON-RPC 2.0 payloads for managing HeroDB via the RPC API (enable with `--enable-rpc`). Methods are named as `hero_<function>`. Params are positional arrays; enum values are strings (e.g., `"Redb"`). Copy-paste into Postman or similar clients.
+
+## Database Management
+
+### Create Database
+Creates a new database with optional per-database encryption key (stored write-only in Admin DB 0).
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 1,
+  "method": "hero_createDatabase",
+  "params": [
+    "Redb",
+    { "name": null, "storage_path": null, "max_size": null, "redis_version": null },
+    null
+  ]
+}
+```
+
+With encryption:
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 2,
+  "method": "hero_createDatabase",
+  "params": [
+    "Sled",
+    { "name": "secure-db", "storage_path": null, "max_size": null, "redis_version": null },
+    "my-per-db-encryption-key"
+  ]
+}
+```
+
+### List Databases
+Returns array of database infos (id, backend, encrypted status, size, etc.).
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 3,
+  "method": "hero_listDatabases",
+  "params": []
+}
+```
+
+### Get Database Info
+Retrieves detailed info for a specific database.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 4,
+  "method": "hero_getDatabaseInfo",
+  "params": [1]
+}
+```
+
+### Delete Database
+Removes physical database file; metadata remains in Admin DB 0.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 5,
+  "method": "hero_deleteDatabase",
+  "params": [1]
+}
+```
+
+## Access Control
+
+### Add Access Key
+Adds a hashed access key for private databases. Permissions: `"read"` or `"readwrite"`.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 6,
+  "method": "hero_addAccessKey",
+  "params": [2, "my-access-key", "readwrite"]
+}
+```
+
+### List Access Keys
+Returns array of key hashes, permissions, and creation timestamps.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 7,
+  "method": "hero_listAccessKeys",
+  "params": [2]
+}
+```
+
+### Delete Access Key
+Removes key by its SHA-256 hash.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 8,
+  "method": "hero_deleteAccessKey",
+  "params": [2, "0123abcd...keyhash..."]
+}
+```
+
+### Set Database Public/Private
+Toggles public access (default true). Private databases require access keys.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 9,
+  "method": "hero_setDatabasePublic",
+  "params": [2, false]
+}
+```
+
+## Server Info
+
+### Get Server Stats
+Returns stats like total databases and uptime.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 10,
+  "method": "hero_getServerStats",
+  "params": []
+}
+```
+
+## Notes
+- Per-database encryption keys are write-only; set at creation and used transparently.
+- Access keys are hashed (SHA-256) for storage; provide plaintext in requests.
+- Backend options: `"Redb"` (default) or `"Sled"`.
+- Config object fields (name, storage_path, etc.) are optional and currently ignored but positional.

docs/tantivy.md

@@ -0,0 +1,253 @@
+# Tantivy Full‑Text Backend (JSON‑RPC)
+
+This document explains how to use HeroDB’s Tantivy-backed full‑text search as a dedicated database backend and provides copy‑pasteable JSON‑RPC requests. Tantivy is available only for non‑admin databases (db_id >= 1). Admin DB 0 always uses Redb/Sled and rejects FT operations.
+
+Important characteristics:
+- Tantivy is a third backend alongside Redb and Sled. It provides search indexes only; there is no KV store backing it.
+- On Tantivy databases, Redis KV/list/hash commands are rejected; only FT commands and basic control (SELECT, CLIENT, INFO, etc.) are allowed.
+- FT JSON‑RPC is namespaced as "herodb" and methods are named with underscore: herodb_ftCreate, herodb_ftAdd, herodb_ftSearch, herodb_ftDel, herodb_ftInfo, herodb_ftDrop.
+
+Reference to server implementation:
+- RPC methods are defined in [rust.trait Rpc()](src/rpc.rs:70):
+  - [rust.fn ft_create()](src/rpc.rs:121)
+  - [rust.fn ft_add()](src/rpc.rs:130)
+  - [rust.fn ft_search()](src/rpc.rs:141)
+  - [rust.fn ft_del()](src/rpc.rs:154)
+  - [rust.fn ft_info()](src/rpc.rs:158)
+  - [rust.fn ft_drop()](src/rpc.rs:162)
+
+Notes on responses:
+- ftCreate/ftAdd/ftDel/ftDrop return a JSON boolean: true on success.
+- ftSearch/ftInfo return a JSON object with a single key "resp" containing a RESP‑encoded string (wire format used by Redis). You can display or parse it on the client side as needed.
+
+RESP usage (redis-cli):
+- For RESP clients, you must SELECT the Tantivy database first. SELECT now succeeds for Tantivy DBs without opening KV storage.
+- After SELECT, you can run FT.* commands within that DB context.
+
+Example with redis-cli:
+```bash
+# Connect to server
+redis-cli -p 6379
+
+# Select Tantivy DB 1 (public by default)
+SELECT 1
+# → OK
+
+# Create index
+FT.CREATE product_catalog SCHEMA title TEXT description TEXT category TAG price NUMERIC rating NUMERIC location GEO
+# → OK
+
+# Add a document
+FT.ADD product_catalog product:1 1.0 title "Wireless Bluetooth Headphones" description "Premium noise-canceling headphones with 30-hour battery life" category "electronics,audio" price 299.99 rating 4.5 location "-122.4194,37.7749"
+# → OK
+
+# Search
+FT.SEARCH product_catalog wireless LIMIT 0 3
+# → RESP array with hits
+```
+
+Storage layout (on disk):
+- Indices are stored per database under:
+  - <base_dir>/search_indexes/<db_id>/<index_name>
+- Example: /tmp/test/search_indexes/1/product_catalog
+
+0) Create a new Tantivy database
+
+Use herodb_createDatabase with backend "Tantivy". DB 0 cannot be Tantivy.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 1,
+  "method": "herodb_createDatabase",
+  "params": [
+    "Tantivy",
+    { "name": "search-db", "storage_path": null, "max_size": null, "redis_version": null },
+    null
+  ]
+}
+```
+
+The response contains the allocated db_id (>= 1). Use that id in the calls below.
+
+1) FT.CREATE — create an index with schema
+
+Method: herodb_ftCreate → [rust.fn ft_create()](src/rpc.rs:121)
+
+Schema format is an array of tuples: [ [field_name, field_type, [options...] ], ... ]
+Supported field types: "TEXT", "NUMERIC" (defaults to F64), "TAG", "GEO"
+Supported options (subset): "WEIGHT", "SORTABLE", "NOINDEX", "SEPARATOR", "CASESENSITIVE"
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 2,
+  "method": "herodb_ftCreate",
+  "params": [
+    1,
+    "product_catalog",
+    [
+      ["title", "TEXT", ["SORTABLE"]],
+      ["description", "TEXT", []],
+      ["category", "TAG", ["SEPARATOR", ","]],
+      ["price", "NUMERIC", ["SORTABLE"]],
+      ["rating", "NUMERIC", []],
+      ["location", "GEO", []]
+    ]
+  ]
+}
+```
+
+Returns: true on success.
+
+2) FT.ADD — add or replace a document
+
+Method: herodb_ftAdd → [rust.fn ft_add()](src/rpc.rs:130)
+
+Fields is an object (map) of field_name → value (all values are sent as strings). GEO expects "lat,lon".
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 3,
+  "method": "herodb_ftAdd",
+  "params": [
+    1,
+    "product_catalog",
+    "product:1",
+    1.0,
+    {
+      "title": "Wireless Bluetooth Headphones",
+      "description": "Premium noise-canceling headphones with 30-hour battery life",
+      "category": "electronics,audio",
+      "price": "299.99",
+      "rating": "4.5",
+      "location": "-122.4194,37.7749"
+    }
+  ]
+}
+```
+
+Returns: true on success.
+
+3) FT.SEARCH — query an index
+
+Method: herodb_ftSearch → [rust.fn ft_search()](src/rpc.rs:141)
+
+Parameters: (db_id, index_name, query, filters?, limit?, offset?, return_fields?)
+- filters: array of [field, value] pairs (Equals filter)
+- limit/offset: numbers (defaults: limit=10, offset=0)
+- return_fields: array of field names to include (optional)
+
+Simple query:
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 4,
+  "method": "herodb_ftSearch",
+  "params": [1, "product_catalog", "wireless", null, 10, 0, null]
+}
+```
+
+Pagination + filters + selected fields:
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 5,
+  "method": "herodb_ftSearch",
+  "params": [
+    1,
+    "product_catalog",
+    "mouse",
+    [["category", "electronics"]],
+    5,
+    0,
+    ["title", "price", "rating"]
+  ]
+}
+```
+
+Response shape:
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 5,
+  "result": { "resp": "*...RESP encoded array..." }
+}
+```
+
+4) FT.INFO — index metadata
+
+Method: herodb_ftInfo → [rust.fn ft_info()](src/rpc.rs:158)
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 6,
+  "method": "herodb_ftInfo",
+  "params": [1, "product_catalog"]
+}
+```
+
+Response shape:
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 6,
+  "result": { "resp": "*...RESP encoded array with fields and counts..." }
+}
+```
+
+5) FT.DEL — delete by doc id
+
+Method: herodb_ftDel → [rust.fn ft_del()](src/rpc.rs:154)
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 7,
+  "method": "herodb_ftDel",
+  "params": [1, "product_catalog", "product:1"]
+}
+```
+
+Returns: true on success. Note: current implementation logs and returns success; physical delete may be a no‑op until delete is finalized in the engine.
+
+6) FT.DROP — drop an index
+
+Method: herodb_ftDrop → [rust.fn ft_drop()](src/rpc.rs:162)
+
+```json
+{
+  "jsonrpc": "2.0",
+  "id": 8,
+  "method": "herodb_ftDrop",
+  "params": [1, "product_catalog"]
+}
+```
+
+Returns: true on success.
+
+Field types and options
+
+- TEXT: stored/indexed/tokenized text. "SORTABLE" marks it fast (stored + fast path in our wrapper).
+- NUMERIC: stored/indexed numeric; default precision F64. "SORTABLE" enables fast column.
+- TAG: exact matching terms. Options: "SEPARATOR" (default ","), "CASESENSITIVE" (default false).
+- GEO: "lat,lon" string; stored as two numeric fields internally.
+
+Backend and permission gating
+
+- FT methods are rejected on DB 0.
+- FT methods require the database backend to be Tantivy; otherwise RPC returns an error.
+- Write‑like FT methods (create/add/del/drop) follow the same permission model as Redis writes on selected databases.
+
+Troubleshooting
+
+- "DB backend is not Tantivy": ensure the database was created with backend "Tantivy".
+- "FT not allowed on DB 0": use a non‑admin database id (>= 1).
+- Empty search results: confirm that the queried fields are tokenized/indexed (TEXT) and that documents were added successfully.
+
+Related docs
+
+- Command‑level search overview: [docs/search.md](docs/search.md:1)
+- RPC definitions: [src/rpc.rs](src/rpc.rs:1)

examples/age_persist_demo.rs

@@ -14,31 +14,25 @@ fn read_reply(s: &mut TcpStream) -> String {
     let n = s.read(&mut buf).unwrap();
     String::from_utf8_lossy(&buf[..n]).to_string()
 }
-fn parse_two_bulk(reply: &str) -> Option<(String, String)> {
+fn parse_two_bulk(reply: &str) -> Option<(String,String)> {
     let mut lines = reply.split("\r\n");
-    if lines.next()? != "*2" {
-        return None;
-    }
+    if lines.next()? != "*2" { return None; }
     let _n = lines.next()?;
     let a = lines.next()?.to_string();
     let _m = lines.next()?;
     let b = lines.next()?.to_string();
-    Some((a, b))
+    Some((a,b))
 }
 fn parse_bulk(reply: &str) -> Option<String> {
     let mut lines = reply.split("\r\n");
     let hdr = lines.next()?;
-    if !hdr.starts_with('$') {
-        return None;
-    }
+    if !hdr.starts_with('$') { return None; }
     Some(lines.next()?.to_string())
 }
 fn parse_simple(reply: &str) -> Option<String> {
     let mut lines = reply.split("\r\n");
     let hdr = lines.next()?;
-    if !hdr.starts_with('+') {
-        return None;
-    }
+    if !hdr.starts_with('+') { return None; }
     Some(hdr[1..].to_string())
 }
 
@@ -51,45 +45,39 @@ fn main() {
     let mut s = TcpStream::connect(addr).expect("connect");
 
     // Generate & persist X25519 enc keys under name "alice"
-    s.write_all(arr(&["age", "keygen", "alice"]).as_bytes())
-        .unwrap();
+    s.write_all(arr(&["age","keygen","alice"]).as_bytes()).unwrap();
     let (_alice_recip, _alice_ident) = parse_two_bulk(&read_reply(&mut s)).expect("gen enc");
 
     // Generate & persist Ed25519 signing key under name "signer"
-    s.write_all(arr(&["age", "signkeygen", "signer"]).as_bytes())
-        .unwrap();
+    s.write_all(arr(&["age","signkeygen","signer"]).as_bytes()).unwrap();
     let (_verify, _secret) = parse_two_bulk(&read_reply(&mut s)).expect("gen sign");
 
     // Encrypt by name
     let msg = "hello from persistent keys";
-    s.write_all(arr(&["age", "encryptname", "alice", msg]).as_bytes())
-        .unwrap();
+    s.write_all(arr(&["age","encryptname","alice", msg]).as_bytes()).unwrap();
     let ct_b64 = parse_bulk(&read_reply(&mut s)).expect("ct b64");
     println!("ciphertext b64: {}", ct_b64);
 
     // Decrypt by name
-    s.write_all(arr(&["age", "decryptname", "alice", &ct_b64]).as_bytes())
-        .unwrap();
+    s.write_all(arr(&["age","decryptname","alice", &ct_b64]).as_bytes()).unwrap();
     let pt = parse_bulk(&read_reply(&mut s)).expect("pt");
     assert_eq!(pt, msg);
     println!("decrypted ok");
 
     // Sign by name
-    s.write_all(arr(&["age", "signname", "signer", msg]).as_bytes())
-        .unwrap();
+    s.write_all(arr(&["age","signname","signer", msg]).as_bytes()).unwrap();
     let sig_b64 = parse_bulk(&read_reply(&mut s)).expect("sig b64");
 
     // Verify by name
-    s.write_all(arr(&["age", "verifyname", "signer", msg, &sig_b64]).as_bytes())
-        .unwrap();
+    s.write_all(arr(&["age","verifyname","signer", msg, &sig_b64]).as_bytes()).unwrap();
     let ok = parse_simple(&read_reply(&mut s)).expect("verify");
     assert_eq!(ok, "1");
     println!("signature verified");
 
     // List names
-    s.write_all(arr(&["age", "list"]).as_bytes()).unwrap();
+    s.write_all(arr(&["age","list"]).as_bytes()).unwrap();
     let list = read_reply(&mut s);
     println!("LIST -> {list}");
 
     println!("✔ persistent AGE workflow complete.");
-}
+}

examples/tantivy_search_demo.sh

@@ -1,239 +0,0 @@
-#!/bin/bash
-
-# HeroDB Tantivy Search Demo
-# This script demonstrates full-text search capabilities using Redis commands
-# HeroDB server should be running on port 6381
-
-set -e  # Exit on any error
-
-# Configuration
-REDIS_HOST="localhost"
-REDIS_PORT="6382"
-REDIS_CLI="redis-cli -h $REDIS_HOST -p $REDIS_PORT"
-
-# Start the herodb server in the background
-echo "Starting herodb server..."
-cargo run -p herodb -- --dir /tmp/herodbtest --port ${REDIS_PORT} --debug &
-SERVER_PID=$!
-echo
-sleep 2 # Give the server a moment to start
-
-# Colors for output
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-BLUE='\033[0;34m'
-YELLOW='\033[1;33m'
-NC='\033[0m' # No Color
-
-# Function to print colored output
-print_header() {
-    echo -e "${BLUE}=== $1 ===${NC}"
-}
-
-print_success() {
-    echo -e "${GREEN}✓ $1${NC}"
-}
-
-print_info() {
-    echo -e "${YELLOW}ℹ $1${NC}"
-}
-
-print_error() {
-    echo -e "${RED}✗ $1${NC}"
-}
-
-# Function to check if HeroDB is running
-check_herodb() {
-    print_info "Checking if HeroDB is running on port $REDIS_PORT..."
-    if ! $REDIS_CLI ping > /dev/null 2>&1; then
-        print_error "HeroDB is not running on port $REDIS_PORT"
-        print_info "Please start HeroDB with: cargo run -- --port $REDIS_PORT"
-        exit 1
-    fi
-    print_success "HeroDB is running and responding"
-}
-
-# Function to execute Redis command with error handling
-execute_cmd() {
-    local description="${@: -1}"
-    set -- "${@:1:$(($#-1))}"
-    
-    echo -e "${YELLOW}Command:${NC} $(printf '%q ' "$@")"
-    if result=$($REDIS_CLI "$@" 2>&1); then
-        echo -e "${GREEN}Result:${NC} $result"
-        return 0
-    else
-        print_error "Failed: $description"
-        echo "Error: $result"
-        return 1
-    fi
-}
-
-# Function to pause for readability
-pause() {
-    echo
-    read -p "Press Enter to continue..."
-    echo
-}
-
-# Main demo function
-main() {
-    clear
-    print_header "HeroDB Tantivy Search Demonstration"
-    echo "This demo shows full-text search capabilities using Redis commands"
-    echo "HeroDB runs on port $REDIS_PORT (instead of Redis default 6379)"
-    echo
-
-    # Check if HeroDB is running
-    check_herodb
-    echo
-
-    print_header "Step 1: Create Search Index"
-    print_info "Creating a product catalog search index with various field types"
-    
-    # Create search index with schema
-    execute_cmd FT.CREATE product_catalog SCHEMA title TEXT description TEXT category TAG price NUMERIC rating NUMERIC location GEO \
-                "Creating search index"
-    
-    print_success "Search index 'product_catalog' created successfully"
-    pause
-
-    print_header "Step 2: Add Sample Products"
-    print_info "Adding sample products to demonstrate different search scenarios"
-    
-    # Add sample products using FT.ADD
-    execute_cmd FT.ADD product_catalog product:1 1.0 title 'Wireless Bluetooth Headphones' description 'Premium noise-canceling headphones with 30-hour battery life' category 'electronics,audio' price 299.99 rating 4.5 location '-122.4194,37.7749' "Adding product 1"
-    execute_cmd FT.ADD product_catalog product:2 1.0 title 'Organic Coffee Beans' description 'Single-origin Ethiopian coffee beans, medium roast' category 'food,beverages,organic' price 24.99 rating 4.8 location '-74.0060,40.7128' "Adding product 2"
-    execute_cmd FT.ADD product_catalog product:3 1.0 title 'Yoga Mat Premium' description 'Eco-friendly yoga mat with superior grip and cushioning' category 'fitness,wellness,eco-friendly' price 89.99 rating 4.3 location '-118.2437,34.0522' "Adding product 3"
-    execute_cmd FT.ADD product_catalog product:4 1.0 title 'Smart Home Speaker' description 'Voice-controlled smart speaker with AI assistant' category 'electronics,smart-home' price 149.99 rating 4.2 location '-87.6298,41.8781' "Adding product 4"
-    execute_cmd FT.ADD product_catalog product:5 1.0 title 'Organic Green Tea' description 'Premium organic green tea leaves from Japan' category 'food,beverages,organic,tea' price 18.99 rating 4.7 location '139.6503,35.6762' "Adding product 5"
-    execute_cmd FT.ADD product_catalog product:6 1.0 title 'Wireless Gaming Mouse' description 'High-precision gaming mouse with RGB lighting' category 'electronics,gaming' price 79.99 rating 4.4 location '-122.3321,47.6062' "Adding product 6"
-    execute_cmd FT.ADD product_catalog product:7 1.0 title 'Comfortable meditation cushion for mindfulness practice' description 'Meditation cushion with premium materials' category 'wellness,meditation' price 45.99 rating 4.6 location '-122.4194,37.7749' "Adding product 7"
-    execute_cmd FT.ADD product_catalog product:8 1.0 title 'Bluetooth Earbuds' description 'True wireless earbuds with active noise cancellation' category 'electronics,audio' price 199.99 rating 4.1 location '-74.0060,40.7128' "Adding product 8"
-    
-    print_success "Added 8 products to the index"
-    pause
-
-    print_header "Step 3: Basic Text Search"
-    print_info "Searching for 'wireless' products"
-    
-    execute_cmd FT.SEARCH product_catalog wireless "Basic text search"
-    pause
-
-    print_header "Step 4: Search with Filters"
-    print_info "Searching for 'organic' products"
-    
-    execute_cmd FT.SEARCH product_catalog organic "Filtered search"
-    pause
-
-    print_header "Step 5: Numeric Range Search"
-    print_info "Searching for 'premium' products"
-    
-    execute_cmd FT.SEARCH product_catalog premium "Text search"
-    pause
-
-    print_header "Step 6: Sorting Results"
-    print_info "Searching for electronics"
-    
-    execute_cmd FT.SEARCH product_catalog electronics "Category search"
-    pause
-
-    print_header "Step 7: Limiting Results"
-    print_info "Searching for wireless products with limit"
-    
-    execute_cmd FT.SEARCH product_catalog wireless LIMIT 0 3 "Limited results"
-    pause
-
-    print_header "Step 8: Complex Query"
-    print_info "Finding audio products with noise cancellation"
-    
-    execute_cmd FT.SEARCH product_catalog 'noise cancellation' "Complex query"
-    pause
-
-    print_header "Step 9: Geographic Search"
-    print_info "Searching for meditation products"
-    
-    execute_cmd FT.SEARCH product_catalog meditation "Text search"
-    pause
-
-    print_header "Step 10: Aggregation Example"
-    print_info "Getting index information and statistics"
-    
-    execute_cmd FT.INFO product_catalog "Index information"
-    pause
-
-    print_header "Step 11: Search Comparison"
-    print_info "Comparing Tantivy search vs simple key matching"
-    
-    echo -e "${YELLOW}Tantivy Full-Text Search:${NC}"
-    execute_cmd FT.SEARCH product_catalog 'battery life' "Full-text search for 'battery life'"
-    
-    echo
-    echo -e "${YELLOW}Simple Key Pattern Matching:${NC}"
-    execute_cmd KEYS *battery* "Simple pattern matching for 'battery'"
-    
-    print_info "Notice how full-text search finds relevant results even when exact words don't match keys"
-    pause
-
-    print_header "Step 12: Fuzzy Search"
-    print_info "Searching for headphones"
-    
-    execute_cmd FT.SEARCH product_catalog headphones "Text search"
-    pause
-
-    print_header "Step 13: Phrase Search"
-    print_info "Searching for coffee products"
-    
-    execute_cmd FT.SEARCH product_catalog coffee "Text search"
-    pause
-
-    print_header "Step 14: Boolean Queries"
-    print_info "Searching for gaming products"
-    
-    execute_cmd FT.SEARCH product_catalog gaming "Text search"
-    echo
-    execute_cmd FT.SEARCH product_catalog tea "Text search"
-    pause
-
-    print_header "Step 15: Cleanup"
-    print_info "Removing test data"
-    
-    # Delete the search index
-    execute_cmd FT.DROP product_catalog "Dropping search index"
-    
-    # Clean up documents from search index
-    for i in {1..8}; do
-        execute_cmd FT.DEL product_catalog product:$i "Deleting product:$i from index"
-    done
-    
-    print_success "Cleanup completed"
-    echo
-
-    print_header "Demo Summary"
-    echo "This demonstration showed:"
-    echo "• Creating search indexes with different field types"
-    echo "• Adding documents to the search index"
-    echo "• Basic and advanced text search queries"
-    echo "• Filtering by categories and numeric ranges"
-    echo "• Sorting and limiting results"
-    echo "• Geographic searches"
-    echo "• Fuzzy matching and phrase searches"
-    echo "• Boolean query operators"
-    echo "• Comparison with simple pattern matching"
-    echo
-    print_success "HeroDB Tantivy search demo completed successfully!"
-    echo
-    print_info "Key advantages of Tantivy full-text search:"
-    echo "  - Relevance scoring and ranking"
-    echo "  - Fuzzy matching and typo tolerance"
-    echo "  - Complex boolean queries"
-    echo "  - Field-specific searches and filters"
-    echo "  - Geographic and numeric range queries"
-    echo "  - Much faster than pattern matching on large datasets"
-    echo
-    print_info "To run HeroDB server: cargo run -- --port 6381"
-    print_info "To connect with redis-cli: redis-cli -h localhost -p 6381"
-}
-
-# Run the demo
-main "$@"

examples/test_tantivy_integration.sh

@@ -1,101 +0,0 @@
-#!/bin/bash
-
-# Simple Tantivy Search Integration Test for HeroDB
-# This script tests the full-text search functionality we just integrated
-
-set -e
-
-echo "🔍 Testing Tantivy Search Integration..."
-
-# Build the project first
-echo "📦 Building HeroDB..."
-cargo build --release
-
-# Start the server in the background
-echo "🚀 Starting HeroDB server on port 6379..."
-cargo run --release -- --port 6379 --dir ./test_data &
-SERVER_PID=$!
-
-# Wait for server to start
-sleep 3
-
-# Function to cleanup on exit
-cleanup() {
-    echo "🧹 Cleaning up..."
-    kill $SERVER_PID 2>/dev/null || true
-    rm -rf ./test_data
-    exit
-}
-
-# Set trap for cleanup
-trap cleanup EXIT INT TERM
-
-# Function to execute Redis command
-execute_cmd() {
-    local cmd="$1"
-    local description="$2"
-    
-    echo "📝 $description"
-    echo "   Command: $cmd"
-    
-    if result=$(redis-cli -p 6379 $cmd 2>&1); then
-        echo "   ✅ Result: $result"
-        echo
-        return 0
-    else
-        echo "   ❌ Failed: $result"
-        echo
-        return 1
-    fi
-}
-
-echo "🧪 Running Tantivy Search Tests..."
-echo
-
-# Test 1: Create a search index
-execute_cmd "ft.create books SCHEMA title TEXT description TEXT author TEXT category TAG price NUMERIC" \
-           "Creating search index 'books'"
-
-# Test 2: Add documents to the index
-execute_cmd "ft.add books book1 1.0 title \"The Great Gatsby\" description \"A classic American novel about the Jazz Age\" author \"F. Scott Fitzgerald\" category \"fiction,classic\" price \"12.99\"" \
-           "Adding first book"
-
-execute_cmd "ft.add books book2 1.0 title \"To Kill a Mockingbird\" description \"A novel about racial injustice in the American South\" author \"Harper Lee\" category \"fiction,classic\" price \"14.99\"" \
-           "Adding second book"
-
-execute_cmd "ft.add books book3 1.0 title \"Programming Rust\" description \"A comprehensive guide to Rust programming language\" author \"Jim Blandy\" category \"programming,technical\" price \"49.99\"" \
-           "Adding third book"
-
-execute_cmd "ft.add books book4 1.0 title \"The Rust Programming Language\" description \"The official book on Rust programming\" author \"Steve Klabnik\" category \"programming,technical\" price \"39.99\"" \
-           "Adding fourth book"
-
-# Test 3: Basic search
-execute_cmd "ft.search books Rust" \
-           "Searching for 'Rust'"
-
-# Test 4: Search with filters
-execute_cmd "ft.search books programming FILTER category programming" \
-           "Searching for 'programming' with category filter"
-
-# Test 5: Search with limit
-execute_cmd "ft.search books \"*\" LIMIT 0 2" \
-           "Getting first 2 documents"
-
-# Test 6: Get index info
-execute_cmd "ft.info books" \
-           "Getting index information"
-
-# Test 7: Delete a document
-execute_cmd "ft.del books book1" \
-           "Deleting book1"
-
-# Test 8: Search again to verify deletion
-execute_cmd "ft.search books Gatsby" \
-           "Searching for deleted book"
-
-# Test 9: Drop the index
-execute_cmd "ft.drop books" \
-           "Dropping the index"
-
-echo "🎉 All tests completed successfully!"
-echo "✅ Tantivy search integration is working correctly"

run.sh

@@ -0,0 +1,143 @@
+#!/bin/bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+
+# Test script for HeroDB - Redis-compatible database with redb backend
+# This script starts the server and runs comprehensive tests
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Configuration
+DB_DIR="/tmp/test_db"
+PORT=6381
+SERVER_PID=""
+
+# Function to print colored output
+print_status() {
+    echo -e "${BLUE}[INFO]${NC} $1"
+}
+
+print_success() {
+    echo -e "${GREEN}[SUCCESS]${NC} $1"
+}
+
+print_error() {
+    echo -e "${RED}[ERROR]${NC} $1"
+}
+
+print_warning() {
+    echo -e "${YELLOW}[WARNING]${NC} $1"
+}
+
+# Function to cleanup on exit
+cleanup() {
+    if [ ! -z "$SERVER_PID" ]; then
+        print_status "Stopping HeroDB server (PID: $SERVER_PID)..."
+        kill $SERVER_PID 2>/dev/null || true
+        wait $SERVER_PID 2>/dev/null || true
+    fi
+    
+    # Clean up test database
+    if [ -d "$DB_DIR" ]; then
+        print_status "Cleaning up test database directory..."
+        rm -rf "$DB_DIR"
+    fi
+}
+
+# Set trap to cleanup on script exit
+trap cleanup EXIT
+
+# Function to wait for server to start
+wait_for_server() {
+    local max_attempts=30
+    local attempt=1
+    
+    print_status "Waiting for server to start on port $PORT..."
+    
+    while [ $attempt -le $max_attempts ]; do
+        if nc -z localhost $PORT 2>/dev/null; then
+            print_success "Server is ready!"
+            return 0
+        fi
+        
+        echo -n "."
+        sleep 1
+        attempt=$((attempt + 1))
+    done
+    
+    print_error "Server failed to start within $max_attempts seconds"
+    return 1
+}
+
+# Function to send Redis command and get response
+redis_cmd() {
+    local cmd="$1"
+    local expected="$2"
+    
+    print_status "Testing: $cmd"
+    
+    local result=$(echo "$cmd" | redis-cli -p $PORT --raw 2>/dev/null || echo "ERROR")
+    
+    if [ "$expected" != "" ] && [ "$result" != "$expected" ]; then
+        print_error "Expected: '$expected', Got: '$result'"
+        return 1
+    else
+        print_success "✓ $cmd -> $result"
+        return 0
+    fi
+}
+
+# Main execution
+main() {
+    print_status "Starting HeroDB"
+    
+    # Build the project
+    print_status "Building HeroDB..."
+    if ! cargo build -p herodb --release; then
+        print_error "Failed to build HeroDB"
+        exit 1
+    fi
+    
+    # Create test database directory
+    mkdir -p "$DB_DIR"
+    
+    # Start the server
+    print_status "Starting HeroDB server..."
+    ${SCRIPT_DIR}/target/release/herodb --dir "$DB_DIR" --port $PORT &
+    SERVER_PID=$!
+    
+    # Wait for server to start
+    if ! wait_for_server; then
+        print_error "Failed to start server"
+        exit 1
+    fi
+    
+}
+
+# Check dependencies
+check_dependencies() {
+    if ! command -v cargo &> /dev/null; then
+        print_error "cargo is required but not installed"
+        exit 1
+    fi
+    
+    if ! command -v nc &> /dev/null; then
+        print_warning "netcat (nc) not found - some tests may not work properly"
+    fi
+    
+    if ! command -v redis-cli &> /dev/null; then
+        print_warning "redis-cli not found - using netcat fallback"
+    fi
+}
+
+# Run dependency check and main function
+check_dependencies
+main "$@"
+tail -f /dev/null

run_tests.sh

@@ -1,4 +1,7 @@
 #!/bin/bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
 
 echo "🧪 Running HeroDB Redis Compatibility Tests"
 echo "=========================================="

src/admin_meta.rs

@@ -0,0 +1,489 @@
+use std::path::PathBuf;
+use std::sync::{Arc, OnceLock, Mutex, RwLock};
+use std::collections::HashMap;
+
+use crate::error::DBError;
+use crate::options;
+use crate::rpc::Permissions;
+use crate::storage::Storage;
+use crate::storage_sled::SledStorage;
+use crate::storage_trait::StorageBackend;
+
+// Key builders
+fn k_admin_next_id() -> &'static str {
+    "admin:next_id"
+}
+fn k_admin_dbs() -> &'static str {
+    "admin:dbs"
+}
+fn k_meta_db(id: u64) -> String {
+    format!("meta:db:{}", id)
+}
+fn k_meta_db_keys(id: u64) -> String {
+    format!("meta:db:{}:keys", id)
+}
+fn k_meta_db_enc(id: u64) -> String {
+    format!("meta:db:{}:enc", id)
+}
+
+// Global cache of admin DB 0 handles per base_dir to avoid sled/reDB file-lock contention
+// and to correctly isolate different test instances with distinct directories.
+static ADMIN_STORAGES: OnceLock<RwLock<HashMap<String, Arc<dyn StorageBackend>>>> = OnceLock::new();
+
+// Global registry for data DB storages to avoid double-open across process.
+static DATA_STORAGES: OnceLock<RwLock<HashMap<u64, Arc<dyn StorageBackend>>>> = OnceLock::new();
+static DATA_INIT_LOCK: Mutex<()> = Mutex::new(());
+
+fn init_admin_storage(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+) -> Result<Arc<dyn StorageBackend>, DBError> {
+    let db_file = PathBuf::from(base_dir).join("0.db");
+    if let Some(parent_dir) = db_file.parent() {
+        std::fs::create_dir_all(parent_dir).map_err(|e| {
+            DBError(format!("Failed to create directory {}: {}", parent_dir.display(), e))
+        })?;
+    }
+    let storage: Arc<dyn StorageBackend> = match backend {
+        options::BackendType::Redb => Arc::new(Storage::new(&db_file, true, Some(admin_secret))?),
+        options::BackendType::Sled => Arc::new(SledStorage::new(&db_file, true, Some(admin_secret))?),
+        options::BackendType::Tantivy => {
+            return Err(DBError("Admin DB 0 cannot use Tantivy backend".to_string()))
+        }
+    };
+    Ok(storage)
+}
+
+// Get or initialize a cached handle to admin DB 0 per base_dir (thread-safe, no double-open race)
+pub fn open_admin_storage(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+) -> Result<Arc<dyn StorageBackend>, DBError> {
+    let map = ADMIN_STORAGES.get_or_init(|| RwLock::new(HashMap::new()));
+    // Fast path
+    if let Some(st) = map.read().unwrap().get(base_dir) {
+        return Ok(st.clone());
+    }
+    // Slow path with write lock
+    {
+        let mut w = map.write().unwrap();
+        if let Some(st) = w.get(base_dir) {
+            return Ok(st.clone());
+        }
+
+        // Detect existing 0.db backend by filesystem, if present.
+        let admin_path = PathBuf::from(base_dir).join("0.db");
+        let detected = if admin_path.exists() {
+            if admin_path.is_file() {
+                Some(options::BackendType::Redb)
+            } else if admin_path.is_dir() {
+                Some(options::BackendType::Sled)
+            } else {
+                None
+            }
+        } else {
+            None
+        };
+
+        let effective_backend = match detected {
+            Some(d) if d != backend => {
+                eprintln!(
+                    "warning: Admin DB 0 at {} appears to be {:?}, but process default is {:?}. Using detected backend.",
+                    admin_path.display(),
+                    d,
+                    backend
+                );
+                d
+            }
+            Some(d) => d,
+            None => backend, // First boot: use requested backend to initialize 0.db
+        };
+
+        let st = init_admin_storage(base_dir, effective_backend, admin_secret)?;
+        w.insert(base_dir.to_string(), st.clone());
+        Ok(st)
+    }
+}
+
+// Ensure admin structures exist in encrypted DB 0
+pub fn ensure_bootstrap(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+) -> Result<(), DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+
+    // Initialize next id if missing
+    if !admin.exists(k_admin_next_id())? {
+        admin.set(k_admin_next_id().to_string(), "1".to_string())?;
+    }
+    // admin:dbs is a hash; it's fine if it doesn't exist (hlen -> 0)
+    Ok(())
+}
+
+// Get or initialize a shared handle to a data DB (> 0), avoiding double-open across subsystems
+pub fn open_data_storage(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+) -> Result<Arc<dyn StorageBackend>, DBError> {
+    if id == 0 {
+        return open_admin_storage(base_dir, backend, admin_secret);
+    }
+
+    // Validate existence in admin metadata
+    if !db_exists(base_dir, backend.clone(), admin_secret, id)? {
+        return Err(DBError(format!(
+            "Cannot open database instance {}, as that database instance does not exist.",
+            id
+        )));
+    }
+
+    let map = DATA_STORAGES.get_or_init(|| RwLock::new(HashMap::new()));
+    // Fast path
+    if let Some(st) = map.read().unwrap().get(&id) {
+        return Ok(st.clone());
+    }
+
+    // Slow path with init lock
+    let _guard = DATA_INIT_LOCK.lock().unwrap();
+    if let Some(st) = map.read().unwrap().get(&id) {
+        return Ok(st.clone());
+    }
+
+    // Resolve effective backend for this db id:
+    // 1) Try admin meta "backend" field
+    // 2) If missing, sniff filesystem (file => Redb, dir => Sled), then persist into admin meta
+    // 3) Fallback to requested 'backend' (startup default) if nothing else is known
+    let meta_backend = get_database_backend(base_dir, backend.clone(), admin_secret, id).ok().flatten();
+    let db_path = PathBuf::from(base_dir).join(format!("{}.db", id));
+    let sniffed_backend = if db_path.exists() {
+        if db_path.is_file() {
+            Some(options::BackendType::Redb)
+        } else if db_path.is_dir() {
+            Some(options::BackendType::Sled)
+        } else {
+            None
+        }
+    } else {
+        None
+    };
+    let effective_backend = meta_backend.clone().or(sniffed_backend).unwrap_or(backend.clone());
+
+    // If we had to sniff (i.e., meta missing), persist it for future robustness
+    if meta_backend.is_none() {
+        let _ = set_database_backend(base_dir, backend.clone(), admin_secret, id, effective_backend.clone());
+    }
+
+    // Warn if caller-provided backend differs from effective
+    if effective_backend != backend {
+        eprintln!(
+            "notice: Database {} backend resolved to {:?} (caller requested {:?}). Using resolved backend.",
+            id, effective_backend, backend
+        );
+    }
+
+    // Determine per-db encryption (from admin meta)
+    let enc = get_enc_key(base_dir, backend.clone(), admin_secret, id)?;
+    let should_encrypt = enc.is_some();
+
+    // Build database file path and ensure parent dir exists
+    let db_file = PathBuf::from(base_dir).join(format!("{}.db", id));
+    if let Some(parent_dir) = db_file.parent() {
+        std::fs::create_dir_all(parent_dir).map_err(|e| {
+            DBError(format!("Failed to create directory {}: {}", parent_dir.display(), e))
+        })?;
+    }
+
+    // Open storage using the effective backend
+    let storage: Arc<dyn StorageBackend> = match effective_backend {
+        options::BackendType::Redb => Arc::new(Storage::new(&db_file, should_encrypt, enc.as_deref())?),
+        options::BackendType::Sled => Arc::new(SledStorage::new(&db_file, should_encrypt, enc.as_deref())?),
+        options::BackendType::Tantivy => {
+            return Err(DBError("Tantivy backend has no KV storage; use FT.* commands only".to_string()))
+        }
+    };
+
+    // Publish to registry
+    map.write().unwrap().insert(id, storage.clone());
+    Ok(storage)
+}
+
+// Allocate the next DB id and persist new pointer
+pub fn allocate_next_id(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+) -> Result<u64, DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let cur = admin
+        .get(k_admin_next_id())?
+        .unwrap_or_else(|| "1".to_string());
+    let id: u64 = cur.parse().unwrap_or(1);
+    let next = id.checked_add(1).ok_or_else(|| DBError("next_id overflow".into()))?;
+    admin.set(k_admin_next_id().to_string(), next.to_string())?;
+
+    // Register into admin:dbs set/hash
+    let _ = admin.hset(k_admin_dbs(), vec![(id.to_string(), "1".to_string())])?;
+
+    // Default meta for the new db: public true
+    let meta_key = k_meta_db(id);
+    let _ = admin.hset(&meta_key, vec![("public".to_string(), "true".to_string())])?;
+
+    Ok(id)
+}
+
+// Check existence of a db id in admin:dbs
+pub fn db_exists(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+) -> Result<bool, DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    Ok(admin.hexists(k_admin_dbs(), &id.to_string())?)
+}
+
+// Get per-db encryption key, if any
+pub fn get_enc_key(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+) -> Result<Option<String>, DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    admin.get(&k_meta_db_enc(id))
+}
+
+// Set per-db encryption key (called during create)
+pub fn set_enc_key(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+    key: &str,
+) -> Result<(), DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    admin.set(k_meta_db_enc(id), key.to_string())
+}
+
+// Set database public flag
+pub fn set_database_public(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+    public: bool,
+) -> Result<(), DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let mk = k_meta_db(id);
+    let _ = admin.hset(&mk, vec![("public".to_string(), public.to_string())])?;
+    Ok(())
+}
+
+// Persist per-db backend type in admin metadata (module-scope)
+pub fn set_database_backend(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+    db_backend: options::BackendType,
+) -> Result<(), DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let mk = k_meta_db(id);
+    let val = match db_backend {
+        options::BackendType::Redb => "Redb",
+        options::BackendType::Sled => "Sled",
+        options::BackendType::Tantivy => "Tantivy",
+    };
+    let _ = admin.hset(&mk, vec![("backend".to_string(), val.to_string())])?;
+    Ok(())
+}
+
+pub fn get_database_backend(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+) -> Result<Option<options::BackendType>, DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let mk = k_meta_db(id);
+    match admin.hget(&mk, "backend")? {
+        Some(s) if s == "Redb" => Ok(Some(options::BackendType::Redb)),
+        Some(s) if s == "Sled" => Ok(Some(options::BackendType::Sled)),
+        Some(s) if s == "Tantivy" => Ok(Some(options::BackendType::Tantivy)),
+        _ => Ok(None),
+    }
+}
+
+// Set database name
+pub fn set_database_name(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+    name: &str,
+) -> Result<(), DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let mk = k_meta_db(id);
+    let _ = admin.hset(&mk, vec![("name".to_string(), name.to_string())])?;
+    Ok(())
+}
+
+// Get database name
+pub fn get_database_name(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+) -> Result<Option<String>, DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let mk = k_meta_db(id);
+    admin.hget(&mk, "name")
+}
+
+// Internal: load public flag; default to true when meta missing
+fn load_public(
+    admin: &Arc<dyn StorageBackend>,
+    id: u64,
+) -> Result<bool, DBError> {
+    let mk = k_meta_db(id);
+    match admin.hget(&mk, "public")? {
+        Some(v) => Ok(v == "true"),
+        None => Ok(true),
+    }
+}
+
+// Add access key for db (value format: "Read:ts" or "ReadWrite:ts")
+pub fn add_access_key(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+    key_plain: &str,
+    perms: Permissions,
+) -> Result<(), DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let hash = crate::rpc::hash_key(key_plain);
+    let v = match perms {
+        Permissions::Read => format!("Read:{}", now_secs()),
+        Permissions::ReadWrite => format!("ReadWrite:{}", now_secs()),
+    };
+    let _ = admin.hset(&k_meta_db_keys(id), vec![(hash, v)])?;
+    Ok(())
+}
+
+// Delete access key by hash
+pub fn delete_access_key(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+    key_hash: &str,
+) -> Result<bool, DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let n = admin.hdel(&k_meta_db_keys(id), vec![key_hash.to_string()])?;
+    Ok(n > 0)
+}
+
+// List access keys, returning (hash, perms, created_at_secs)
+pub fn list_access_keys(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+) -> Result<Vec<(String, Permissions, u64)>, DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let pairs = admin.hgetall(&k_meta_db_keys(id))?;
+    let mut out = Vec::new();
+    for (hash, val) in pairs {
+        let (perm, ts) = parse_perm_value(&val);
+        out.push((hash, perm, ts));
+    }
+    Ok(out)
+}
+
+// Verify access permission for db id with optional key
+// Returns:
+// - Ok(Some(Permissions)) when access is allowed
+// - Ok(None) when not allowed or db missing (caller can distinguish by calling db_exists)
+pub fn verify_access(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+    id: u64,
+    key_opt: Option<&str>,
+) -> Result<Option<Permissions>, DBError> {
+    // Admin DB 0: require exact admin_secret
+    if id == 0 {
+        if let Some(k) = key_opt {
+            if k == admin_secret {
+                return Ok(Some(Permissions::ReadWrite));
+            }
+        }
+        return Ok(None);
+    }
+
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    if !admin.hexists(k_admin_dbs(), &id.to_string())? {
+        return Ok(None);
+    }
+
+    // Public?
+    if load_public(&admin, id)? {
+        return Ok(Some(Permissions::ReadWrite));
+    }
+
+    // Private: require key and verify
+    if let Some(k) = key_opt {
+        let hash = crate::rpc::hash_key(k);
+        if let Some(v) = admin.hget(&k_meta_db_keys(id), &hash)? {
+            let (perm, _ts) = parse_perm_value(&v);
+            return Ok(Some(perm));
+        }
+    }
+    Ok(None)
+}
+
+// Enumerate all db ids
+pub fn list_dbs(
+    base_dir: &str,
+    backend: options::BackendType,
+    admin_secret: &str,
+) -> Result<Vec<u64>, DBError> {
+    let admin = open_admin_storage(base_dir, backend, admin_secret)?;
+    let ids = admin.hkeys(k_admin_dbs())?;
+    let mut out = Vec::new();
+    for s in ids {
+        if let Ok(v) = s.parse() {
+            out.push(v);
+        }
+    }
+    Ok(out)
+}
+
+// Helper: parse permission value "Read:ts" or "ReadWrite:ts"
+fn parse_perm_value(v: &str) -> (Permissions, u64) {
+    let mut parts = v.split(':');
+    let p = parts.next().unwrap_or("Read");
+    let ts = parts
+        .next()
+        .and_then(|s| s.parse().ok())
+        .unwrap_or(0u64);
+    let perm = match p {
+        "ReadWrite" => Permissions::ReadWrite,
+        _ => Permissions::Read,
+    };
+    (perm, ts)
+}
+
+fn now_secs() -> u64 {
+    use std::time::{SystemTime, UNIX_EPOCH};
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_secs()
+}

src/age.rs

@@ -12,17 +12,19 @@
 
 use std::str::FromStr;
 
-use age::x25519;
-use age::{Decryptor, Encryptor};
 use secrecy::ExposeSecret;
+use age::{Decryptor, Encryptor};
+use age::x25519;
 
-use ed25519_dalek::{Signature, Signer, SigningKey, Verifier, VerifyingKey};
+use ed25519_dalek::{Signature, Signer, Verifier, SigningKey, VerifyingKey};
 
 use base64::{engine::general_purpose::STANDARD as B64, Engine as _};
+use std::collections::HashSet;
+use std::convert::TryInto;
 
-use crate::error::DBError;
 use crate::protocol::Protocol;
 use crate::server::Server;
+use crate::error::DBError;
 
 // ---------- Internal helpers ----------
 
@@ -32,7 +34,7 @@ pub enum AgeWireError {
     Crypto(String),
     Utf8,
     SignatureLen,
-    NotFound(&'static str), // which kind of key was missing
+    NotFound(&'static str),     // which kind of key was missing
     Storage(String),
 }
 
@@ -74,6 +76,125 @@ fn parse_ed25519_verifying_key(s: &str) -> Result<VerifyingKey, AgeWireError> {
     VerifyingKey::from_bytes(&key_bytes).map_err(|_| AgeWireError::ParseKey)
 }
 
+// ---------- Derivation + Raw X25519 (Ed25519 -> X25519) ----------
+//
+// We deterministically derive an X25519 keypair from an Ed25519 SigningKey.
+// We persist the X25519 public/secret as base64-encoded 32-byte raw values
+// (no "age1..."/"AGE-SECRET-KEY-1..." formatting). Name-based encrypt/decrypt
+// uses these raw values directly via x25519-dalek + ChaCha20Poly1305.
+
+use chacha20poly1305::{aead::{Aead, KeyInit}, ChaCha20Poly1305, Key, Nonce};
+use sha2::{Digest, Sha256};
+use x25519_dalek::{PublicKey as XPublicKey, StaticSecret as XStaticSecret};
+
+fn derive_x25519_raw_from_ed25519(sk: &SigningKey) -> ([u8; 32], [u8; 32]) {
+    // X25519 secret scalar (clamped) from Ed25519 secret
+    let scalar: [u8; 32] = sk.to_scalar_bytes();
+    // Build X25519 secret/public using dalek
+    let xsec = XStaticSecret::from(scalar);
+    let xpub = XPublicKey::from(&xsec);
+    (xpub.to_bytes(), xsec.to_bytes())
+}
+
+fn derive_x25519_raw_b64_from_ed25519(sk: &SigningKey) -> (String, String) {
+    let (xpub, xsec) = derive_x25519_raw_from_ed25519(sk);
+    (B64.encode(xpub), B64.encode(xsec))
+}
+
+// Helper: detect whether a stored key looks like an age-formatted string
+fn looks_like_age_format(s: &str) -> bool {
+    s.starts_with("age1") || s.starts_with("AGE-SECRET-KEY-1")
+}
+
+// Our container format for name-based raw X25519 encryption:
+// bytes = "HDBX1" (5) || eph_pub(32) || nonce(12) || ciphertext(..)
+// Entire blob is base64-encoded for transport.
+const HDBX1_MAGIC: &[u8; 5] = b"HDBX1";
+
+fn encrypt_b64_with_x25519_raw(recip_pub_b64: &str, msg: &str) -> Result<String, AgeWireError> {
+    use rand::RngCore;
+    use rand::rngs::OsRng;
+
+    // Parse recipient public key (raw 32 bytes, base64)
+    let recip_pub_bytes = B64.decode(recip_pub_b64).map_err(|_| AgeWireError::ParseKey)?;
+    if recip_pub_bytes.len() != 32 { return Err(AgeWireError::ParseKey); }
+    let recip_pub_arr: [u8; 32] = recip_pub_bytes.as_slice().try_into().map_err(|_| AgeWireError::ParseKey)?;
+    let recip_pub: XPublicKey = XPublicKey::from(recip_pub_arr);
+
+    // Generate ephemeral X25519 keypair
+    let mut eph_sec_bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut eph_sec_bytes);
+    let eph_sec = XStaticSecret::from(eph_sec_bytes);
+    let eph_pub = XPublicKey::from(&eph_sec);
+
+    // ECDH
+    let shared = eph_sec.diffie_hellman(&recip_pub);
+    // Derive symmetric key via SHA-256 over context + shared + parties
+    let mut hasher = Sha256::default();
+    hasher.update(b"herodb-x25519-v1");
+    hasher.update(shared.as_bytes());
+    hasher.update(eph_pub.as_bytes());
+    hasher.update(recip_pub.as_bytes());
+    let key_bytes = hasher.finalize();
+    let key = Key::from_slice(&key_bytes[..32]);
+
+    // Nonce (12 bytes)
+    let mut nonce_bytes = [0u8; 12];
+    OsRng.fill_bytes(&mut nonce_bytes);
+    let nonce = Nonce::from_slice(&nonce_bytes);
+
+    // Encrypt
+    let cipher = ChaCha20Poly1305::new(key);
+    let ct = cipher.encrypt(nonce, msg.as_bytes())
+        .map_err(|e| AgeWireError::Crypto(format!("encrypt: {e}")))?;
+
+    // Assemble container
+    let mut out = Vec::with_capacity(5 + 32 + 12 + ct.len());
+    out.extend_from_slice(HDBX1_MAGIC);
+    out.extend_from_slice(eph_pub.as_bytes());
+    out.extend_from_slice(&nonce_bytes);
+    out.extend_from_slice(&ct);
+
+    Ok(B64.encode(out))
+}
+
+fn decrypt_b64_with_x25519_raw(identity_sec_b64: &str, ct_b64: &str) -> Result<String, AgeWireError> {
+    // Parse X25519 secret (raw 32 bytes, base64)
+    let sec_bytes = B64.decode(identity_sec_b64).map_err(|_| AgeWireError::ParseKey)?;
+    if sec_bytes.len() != 32 { return Err(AgeWireError::ParseKey); }
+    let sec_arr: [u8; 32] = sec_bytes.as_slice().try_into().map_err(|_| AgeWireError::ParseKey)?;
+    let xsec = XStaticSecret::from(sec_arr);
+    let xpub = XPublicKey::from(&xsec); // self public
+
+    // Decode container
+    let blob = B64.decode(ct_b64.as_bytes()).map_err(|e| AgeWireError::Crypto(e.to_string()))?;
+    if blob.len() < 5 + 32 + 12 { return Err(AgeWireError::Crypto("ciphertext too short".to_string())); }
+    if &blob[..5] != HDBX1_MAGIC { return Err(AgeWireError::Crypto("bad header".to_string())); }
+
+    let eph_pub_arr: [u8; 32] = blob[5..5+32].try_into().map_err(|_| AgeWireError::Crypto("bad eph pub".to_string()))?;
+    let eph_pub = XPublicKey::from(eph_pub_arr);
+    let nonce_bytes: [u8; 12] = blob[5+32..5+32+12].try_into().unwrap();
+    let ct = &blob[5+32+12..];
+
+    // Recompute shared + key
+    let shared = xsec.diffie_hellman(&eph_pub);
+    let mut hasher = Sha256::default();
+    hasher.update(b"herodb-x25519-v1");
+    hasher.update(shared.as_bytes());
+    hasher.update(eph_pub.as_bytes());
+    hasher.update(xpub.as_bytes());
+    let key_bytes = hasher.finalize();
+    let key = Key::from_slice(&key_bytes[..32]);
+
+    // Decrypt
+    let cipher = ChaCha20Poly1305::new(key);
+    let nonce = Nonce::from_slice(&nonce_bytes);
+    let pt = cipher.decrypt(nonce, ct)
+        .map_err(|e| AgeWireError::Crypto(format!("decrypt: {e}")))?;
+
+    String::from_utf8(pt).map_err(|_| AgeWireError::Utf8)
+}
+
 // ---------- Stateless crypto helpers (string in/out) ----------
 
 pub fn gen_enc_keypair() -> (String, String) {
@@ -83,38 +204,34 @@ pub fn gen_enc_keypair() -> (String, String) {
 }
 
 pub fn gen_sign_keypair() -> (String, String) {
-    use rand::rngs::OsRng;
     use rand::RngCore;
-
+    use rand::rngs::OsRng;
+    
     // Generate random 32 bytes for the signing key
     let mut secret_bytes = [0u8; 32];
     OsRng.fill_bytes(&mut secret_bytes);
-
+    
     let signing_key = SigningKey::from_bytes(&secret_bytes);
     let verifying_key = signing_key.verifying_key();
-
+    
     // Encode as base64 for storage
     let signing_key_b64 = B64.encode(signing_key.to_bytes());
     let verifying_key_b64 = B64.encode(verifying_key.to_bytes());
-
+    
     (verifying_key_b64, signing_key_b64) // (verify_pub, signing_secret)
 }
 
 /// Encrypt `msg` for `recipient_str` (X25519). Returns base64(ciphertext).
 pub fn encrypt_b64(recipient_str: &str, msg: &str) -> Result<String, AgeWireError> {
     let recipient = parse_recipient(recipient_str)?;
-    let enc =
-        Encryptor::with_recipients(vec![Box::new(recipient)]).expect("failed to create encryptor"); // Handle Option<Encryptor>
+    let enc = Encryptor::with_recipients(vec![Box::new(recipient)])
+        .expect("failed to create encryptor"); // Handle Option<Encryptor>
     let mut out = Vec::new();
     {
         use std::io::Write;
-        let mut w = enc
-            .wrap_output(&mut out)
-            .map_err(|e| AgeWireError::Crypto(e.to_string()))?;
-        w.write_all(msg.as_bytes())
-            .map_err(|e| AgeWireError::Crypto(e.to_string()))?;
-        w.finish()
-            .map_err(|e| AgeWireError::Crypto(e.to_string()))?;
+        let mut w = enc.wrap_output(&mut out).map_err(|e| AgeWireError::Crypto(e.to_string()))?;
+        w.write_all(msg.as_bytes()).map_err(|e| AgeWireError::Crypto(e.to_string()))?;
+        w.finish().map_err(|e| AgeWireError::Crypto(e.to_string()))?;
     }
     Ok(B64.encode(out))
 }
@@ -122,27 +239,19 @@ pub fn encrypt_b64(recipient_str: &str, msg: &str) -> Result<String, AgeWireErro
 /// Decrypt base64(ciphertext) with `identity_str`. Returns plaintext String.
 pub fn decrypt_b64(identity_str: &str, ct_b64: &str) -> Result<String, AgeWireError> {
     let id = parse_identity(identity_str)?;
-    let ct = B64
-        .decode(ct_b64.as_bytes())
-        .map_err(|e| AgeWireError::Crypto(e.to_string()))?;
+    let ct = B64.decode(ct_b64.as_bytes()).map_err(|e| AgeWireError::Crypto(e.to_string()))?;
     let dec = Decryptor::new(&ct[..]).map_err(|e| AgeWireError::Crypto(e.to_string()))?;
-
+    
     // The decrypt method returns a Result<StreamReader, DecryptError>
     let mut r = match dec {
-        Decryptor::Recipients(d) => d
-            .decrypt(std::iter::once(&id as &dyn age::Identity))
+        Decryptor::Recipients(d) => d.decrypt(std::iter::once(&id as &dyn age::Identity))
             .map_err(|e| AgeWireError::Crypto(e.to_string()))?,
-        Decryptor::Passphrase(_) => {
-            return Err(AgeWireError::Crypto(
-                "Expected recipients, got passphrase".to_string(),
-            ))
-        }
+        Decryptor::Passphrase(_) => return Err(AgeWireError::Crypto("Expected recipients, got passphrase".to_string())),
     };
-
+    
     let mut pt = Vec::new();
     use std::io::Read;
-    r.read_to_end(&mut pt)
-        .map_err(|e| AgeWireError::Crypto(e.to_string()))?;
+    r.read_to_end(&mut pt).map_err(|e| AgeWireError::Crypto(e.to_string()))?;
     String::from_utf8(pt).map_err(|_| AgeWireError::Utf8)
 }
 
@@ -156,9 +265,7 @@ pub fn sign_b64(signing_secret_str: &str, msg: &str) -> Result<String, AgeWireEr
 /// Verify detached signature (base64) for `msg` with pubkey.
 pub fn verify_b64(verify_pub_str: &str, msg: &str, sig_b64: &str) -> Result<bool, AgeWireError> {
     let verifying_key = parse_ed25519_verifying_key(verify_pub_str)?;
-    let sig_bytes = B64
-        .decode(sig_b64.as_bytes())
-        .map_err(|e| AgeWireError::Crypto(e.to_string()))?;
+    let sig_bytes = B64.decode(sig_b64.as_bytes()).map_err(|e| AgeWireError::Crypto(e.to_string()))?;
     if sig_bytes.len() != 64 {
         return Err(AgeWireError::SignatureLen);
     }
@@ -169,49 +276,30 @@ pub fn verify_b64(verify_pub_str: &str, msg: &str, sig_b64: &str) -> Result<bool
 // ---------- Storage helpers ----------
 
 fn sget(server: &Server, key: &str) -> Result<Option<String>, AgeWireError> {
-    let st = server
-        .current_storage()
-        .map_err(|e| AgeWireError::Storage(e.0))?;
+    let st = server.current_storage().map_err(|e| AgeWireError::Storage(e.0))?;
     st.get(key).map_err(|e| AgeWireError::Storage(e.0))
 }
 fn sset(server: &Server, key: &str, val: &str) -> Result<(), AgeWireError> {
-    let st = server
-        .current_storage()
-        .map_err(|e| AgeWireError::Storage(e.0))?;
-    st.set(key.to_string(), val.to_string())
-        .map_err(|e| AgeWireError::Storage(e.0))
+    let st = server.current_storage().map_err(|e| AgeWireError::Storage(e.0))?;
+    st.set(key.to_string(), val.to_string()).map_err(|e| AgeWireError::Storage(e.0))
 }
 
-fn enc_pub_key_key(name: &str) -> String {
-    format!("age:key:{name}")
-}
-fn enc_priv_key_key(name: &str) -> String {
-    format!("age:privkey:{name}")
-}
-fn sign_pub_key_key(name: &str) -> String {
-    format!("age:signpub:{name}")
-}
-fn sign_priv_key_key(name: &str) -> String {
-    format!("age:signpriv:{name}")
-}
+fn enc_pub_key_key(name: &str) -> String { format!("age:key:{name}") }
+fn enc_priv_key_key(name: &str) -> String { format!("age:privkey:{name}") }
+fn sign_pub_key_key(name: &str) -> String { format!("age:signpub:{name}") }
+fn sign_priv_key_key(name: &str) -> String { format!("age:signpriv:{name}") }
 
 // ---------- Command handlers (RESP Protocol) ----------
 // Basic (stateless) ones kept for completeness
 
 pub async fn cmd_age_genenc() -> Protocol {
     let (recip, ident) = gen_enc_keypair();
-    Protocol::Array(vec![
-        Protocol::BulkString(recip),
-        Protocol::BulkString(ident),
-    ])
+    Protocol::Array(vec![Protocol::BulkString(recip), Protocol::BulkString(ident)])
 }
 
 pub async fn cmd_age_gensign() -> Protocol {
     let (verify, secret) = gen_sign_keypair();
-    Protocol::Array(vec![
-        Protocol::BulkString(verify),
-        Protocol::BulkString(secret),
-    ])
+    Protocol::Array(vec![Protocol::BulkString(verify), Protocol::BulkString(secret)])
 }
 
 pub async fn cmd_age_encrypt(recipient: &str, message: &str) -> Protocol {
@@ -243,66 +331,159 @@ pub async fn cmd_age_verify(verify_pub: &str, message: &str, sig_b64: &str) -> P
     }
 }
 
+// ---------- NEW: unified stateless generator (Ed25519 + derived X25519 raw) ----------
+//
+// Returns 4-tuple:
+// [ verify_pub_b64 (32B), signpriv_b64 (32B), x25519_pub_b64 (32B), x25519_sec_b64 (32B) ]
+// No persistence (stateless).
+pub async fn cmd_age_genkey() -> Protocol {
+    use rand::RngCore;
+    use rand::rngs::OsRng;
+
+    let mut secret_bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut secret_bytes);
+
+    let signing_key = SigningKey::from_bytes(&secret_bytes);
+    let verifying_key = signing_key.verifying_key();
+
+    let verify_b64 = B64.encode(verifying_key.to_bytes());
+    let sign_b64 = B64.encode(signing_key.to_bytes());
+
+    let (xpub_b64, xsec_b64) = derive_x25519_raw_b64_from_ed25519(&signing_key);
+
+    Protocol::Array(vec![
+        Protocol::BulkString(verify_b64),
+        Protocol::BulkString(sign_b64),
+        Protocol::BulkString(xpub_b64),
+        Protocol::BulkString(xsec_b64),
+    ])
+}
+
 // ---------- NEW: Persistent, named-key commands ----------
 
 pub async fn cmd_age_keygen(server: &Server, name: &str) -> Protocol {
-    let (recip, ident) = gen_enc_keypair();
-    if let Err(e) = sset(server, &enc_pub_key_key(name), &recip) {
-        return e.to_protocol();
-    }
-    if let Err(e) = sset(server, &enc_priv_key_key(name), &ident) {
-        return e.to_protocol();
-    }
+    use rand::RngCore;
+    use rand::rngs::OsRng;
+
+    // Generate Ed25519 keypair
+    let mut secret_bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut secret_bytes);
+    let signing_key = SigningKey::from_bytes(&secret_bytes);
+    let verifying_key = signing_key.verifying_key();
+
+    // Encode Ed25519 as base64 (32 bytes)
+    let verify_b64 = B64.encode(verifying_key.to_bytes());
+    let sign_b64 = B64.encode(signing_key.to_bytes());
+
+    // Derive X25519 raw (32-byte) keys and encode as base64
+    let (xpub_b64, xsec_b64) = derive_x25519_raw_b64_from_ed25519(&signing_key);
+
+    // Decode to create age-formatted strings
+    let xpub_bytes = B64.decode(&xpub_b64).unwrap();
+    let xsec_bytes = B64.decode(&xsec_b64).unwrap();
+    let xpub_arr: [u8; 32] = xpub_bytes.as_slice().try_into().unwrap();
+    let xsec_arr: [u8; 32] = xsec_bytes.as_slice().try_into().unwrap();
+    let recip_str = format!("age1{}", B64.encode(xpub_arr));
+    let ident_str = format!("AGE-SECRET-KEY-1{}", B64.encode(xsec_arr));
+
+    // Persist Ed25519 and derived X25519 (key-managed mode)
+    if let Err(e) = sset(server, &sign_pub_key_key(name), &verify_b64) { return e.to_protocol(); }
+    if let Err(e) = sset(server, &sign_priv_key_key(name), &sign_b64) { return e.to_protocol(); }
+    if let Err(e) = sset(server, &enc_pub_key_key(name), &xpub_b64) { return e.to_protocol(); }
+    if let Err(e) = sset(server, &enc_priv_key_key(name), &xsec_b64) { return e.to_protocol(); }
+
+    // Return [recipient, identity] in age format
     Protocol::Array(vec![
-        Protocol::BulkString(recip),
-        Protocol::BulkString(ident),
+        Protocol::BulkString(recip_str),
+        Protocol::BulkString(ident_str),
     ])
 }
 
 pub async fn cmd_age_signkeygen(server: &Server, name: &str) -> Protocol {
     let (verify, secret) = gen_sign_keypair();
-    if let Err(e) = sset(server, &sign_pub_key_key(name), &verify) {
-        return e.to_protocol();
-    }
-    if let Err(e) = sset(server, &sign_priv_key_key(name), &secret) {
-        return e.to_protocol();
-    }
-    Protocol::Array(vec![
-        Protocol::BulkString(verify),
-        Protocol::BulkString(secret),
-    ])
+    if let Err(e) = sset(server, &sign_pub_key_key(name), &verify) { return e.to_protocol(); }
+    if let Err(e) = sset(server, &sign_priv_key_key(name), &secret) { return e.to_protocol(); }
+    Protocol::Array(vec![Protocol::BulkString(verify), Protocol::BulkString(secret)])
 }
 
 pub async fn cmd_age_encrypt_name(server: &Server, name: &str, message: &str) -> Protocol {
-    let recip = match sget(server, &enc_pub_key_key(name)) {
+    // Load stored recipient (could be raw b64 32-byte or "age1..." from legacy)
+    let recip_or_b64 = match sget(server, &enc_pub_key_key(name)) {
         Ok(Some(v)) => v,
-        Ok(None) => return AgeWireError::NotFound("recipient (age:key:{name})").to_protocol(),
+        Ok(None) => {
+            // Derive from stored Ed25519 if present, then persist
+            match sget(server, &sign_priv_key_key(name)) {
+                Ok(Some(sign_b64)) => {
+                    let sk = match parse_ed25519_signing_key(&sign_b64) {
+                        Ok(k) => k,
+                        Err(e) => return e.to_protocol(),
+                    };
+                    let (xpub_b64, xsec_b64) = derive_x25519_raw_b64_from_ed25519(&sk);
+                    if let Err(e) = sset(server, &enc_pub_key_key(name), &xpub_b64) { return e.to_protocol(); }
+                    if let Err(e) = sset(server, &enc_priv_key_key(name), &xsec_b64) { return e.to_protocol(); }
+                    xpub_b64
+                }
+                Ok(None) => return AgeWireError::NotFound("recipient (age:key:{name})").to_protocol(),
+                Err(e) => return e.to_protocol(),
+            }
+        }
         Err(e) => return e.to_protocol(),
     };
-    match encrypt_b64(&recip, message) {
-        Ok(ct) => Protocol::BulkString(ct),
-        Err(e) => e.to_protocol(),
+
+    if looks_like_age_format(&recip_or_b64) {
+        match encrypt_b64(&recip_or_b64, message) {
+            Ok(ct) => Protocol::BulkString(ct),
+            Err(e) => e.to_protocol(),
+        }
+    } else {
+        match encrypt_b64_with_x25519_raw(&recip_or_b64, message) {
+            Ok(ct) => Protocol::BulkString(ct),
+            Err(e) => e.to_protocol(),
+        }
     }
 }
 
 pub async fn cmd_age_decrypt_name(server: &Server, name: &str, ct_b64: &str) -> Protocol {
-    let ident = match sget(server, &enc_priv_key_key(name)) {
+    // Load stored identity (could be raw b64 32-byte or "AGE-SECRET-KEY-1..." from legacy)
+    let ident_or_b64 = match sget(server, &enc_priv_key_key(name)) {
         Ok(Some(v)) => v,
-        Ok(None) => return AgeWireError::NotFound("identity (age:privkey:{name})").to_protocol(),
+        Ok(None) => {
+            // Derive from stored Ed25519 if present, then persist
+            match sget(server, &sign_priv_key_key(name)) {
+                Ok(Some(sign_b64)) => {
+                    let sk = match parse_ed25519_signing_key(&sign_b64) {
+                        Ok(k) => k,
+                        Err(e) => return e.to_protocol(),
+                    };
+                    let (xpub_b64, xsec_b64) = derive_x25519_raw_b64_from_ed25519(&sk);
+                    if let Err(e) = sset(server, &enc_pub_key_key(name), &xpub_b64) { return e.to_protocol(); }
+                    if let Err(e) = sset(server, &enc_priv_key_key(name), &xsec_b64) { return e.to_protocol(); }
+                    xsec_b64
+                }
+                Ok(None) => return AgeWireError::NotFound("identity (age:privkey:{name})").to_protocol(),
+                Err(e) => return e.to_protocol(),
+            }
+        }
         Err(e) => return e.to_protocol(),
     };
-    match decrypt_b64(&ident, ct_b64) {
-        Ok(pt) => Protocol::BulkString(pt),
-        Err(e) => e.to_protocol(),
+
+    if looks_like_age_format(&ident_or_b64) {
+        match decrypt_b64(&ident_or_b64, ct_b64) {
+            Ok(pt) => Protocol::BulkString(pt),
+            Err(e) => e.to_protocol(),
+        }
+    } else {
+        match decrypt_b64_with_x25519_raw(&ident_or_b64, ct_b64) {
+            Ok(pt) => Protocol::BulkString(pt),
+            Err(e) => e.to_protocol(),
+        }
     }
 }
 
 pub async fn cmd_age_sign_name(server: &Server, name: &str, message: &str) -> Protocol {
     let sec = match sget(server, &sign_priv_key_key(name)) {
         Ok(Some(v)) => v,
-        Ok(None) => {
-            return AgeWireError::NotFound("signing secret (age:signpriv:{name})").to_protocol()
-        }
+        Ok(None) => return AgeWireError::NotFound("signing secret (age:signpriv:{name})").to_protocol(),
         Err(e) => return e.to_protocol(),
     };
     match sign_b64(&sec, message) {
@@ -311,17 +492,10 @@ pub async fn cmd_age_sign_name(server: &Server, name: &str, message: &str) -> Pr
     }
 }
 
-pub async fn cmd_age_verify_name(
-    server: &Server,
-    name: &str,
-    message: &str,
-    sig_b64: &str,
-) -> Protocol {
+pub async fn cmd_age_verify_name(server: &Server, name: &str, message: &str, sig_b64: &str) -> Protocol {
     let pubk = match sget(server, &sign_pub_key_key(name)) {
         Ok(Some(v)) => v,
-        Ok(None) => {
-            return AgeWireError::NotFound("verify pubkey (age:signpub:{name})").to_protocol()
-        }
+        Ok(None) => return AgeWireError::NotFound("verify pubkey (age:signpub:{name})").to_protocol(),
         Err(e) => return e.to_protocol(),
     };
     match verify_b64(&pubk, message, sig_b64) {
@@ -332,11 +506,8 @@ pub async fn cmd_age_verify_name(
 }
 
 pub async fn cmd_age_list(server: &Server) -> Protocol {
-    // Returns 4 arrays: ["encpub", <names...>], ["encpriv", ...], ["signpub", ...], ["signpriv", ...]
-    let st = match server.current_storage() {
-        Ok(s) => s,
-        Err(e) => return Protocol::err(&e.0),
-    };
+    // Return a flat, deduplicated, sorted list of managed key names (no labels)
+    let st = match server.current_storage() { Ok(s) => s, Err(e) => return Protocol::err(&e.0) };
 
     let pull = |pat: &str, prefix: &str| -> Result<Vec<String>, DBError> {
         let keys = st.keys(pat)?;
@@ -348,35 +519,18 @@ pub async fn cmd_age_list(server: &Server) -> Protocol {
         Ok(names)
     };
 
-    let encpub = match pull("age:key:*", "age:key:") {
-        Ok(v) => v,
-        Err(e) => return Protocol::err(&e.0),
-    };
-    let encpriv = match pull("age:privkey:*", "age:privkey:") {
-        Ok(v) => v,
-        Err(e) => return Protocol::err(&e.0),
-    };
-    let signpub = match pull("age:signpub:*", "age:signpub:") {
-        Ok(v) => v,
-        Err(e) => return Protocol::err(&e.0),
-    };
-    let signpriv = match pull("age:signpriv:*", "age:signpriv:") {
-        Ok(v) => v,
-        Err(e) => return Protocol::err(&e.0),
-    };
+    let encpub   = match pull("age:key:*",      "age:key:")      { Ok(v) => v, Err(e)=> return Protocol::err(&e.0) };
+    let encpriv  = match pull("age:privkey:*",  "age:privkey:")  { Ok(v) => v, Err(e)=> return Protocol::err(&e.0) };
+    let signpub  = match pull("age:signpub:*",  "age:signpub:")  { Ok(v) => v, Err(e)=> return Protocol::err(&e.0) };
+    let signpriv = match pull("age:signpriv:*", "age:signpriv:") { Ok(v) => v, Err(e)=> return Protocol::err(&e.0) };
 
-    let to_arr = |label: &str, v: Vec<String>| {
-        let mut out = vec![Protocol::BulkString(label.to_string())];
-        out.push(Protocol::Array(
-            v.into_iter().map(Protocol::BulkString).collect(),
-        ));
-        Protocol::Array(out)
-    };
+    let mut set: HashSet<String> = HashSet::new();
+    for n in encpub.into_iter().chain(encpriv).chain(signpub).chain(signpriv) {
+        set.insert(n);
+    }
 
-    Protocol::Array(vec![
-        to_arr("encpub", encpub),
-        to_arr("encpriv", encpriv),
-        to_arr("signpub", signpub),
-        to_arr("signpriv", signpriv),
-    ])
-}
+    let mut names: Vec<String> = set.into_iter().collect();
+    names.sort();
+
+    Protocol::Array(names.into_iter().map(Protocol::BulkString).collect())
+}

src/crypto.rs

@@ -11,9 +11,9 @@ const TAG_LEN: usize = 16;
 
 #[derive(Debug)]
 pub enum CryptoError {
-    Format,      // wrong length / header
-    Version(u8), // unknown version
-    Decrypt,     // wrong key or corrupted data
+    Format,         // wrong length / header
+    Version(u8),    // unknown version
+    Decrypt,        // wrong key or corrupted data
 }
 
 impl From<CryptoError> for crate::error::DBError {
@@ -71,4 +71,4 @@ impl CryptoFactory {
         let cipher = XChaCha20Poly1305::new(&self.key);
         cipher.decrypt(nonce, ct).map_err(|_| CryptoError::Decrypt)
     }
-}
+}

src/error.rs

@@ -1,8 +1,9 @@
 use std::num::ParseIntError;
 
-use bincode;
-use redb;
 use tokio::sync::mpsc;
+use redb;
+use bincode;
+
 
 // todo: more error types
 #[derive(Debug)]

src/lib.rs

@@ -1,12 +1,16 @@
-pub mod age; // NEW
+pub mod age;
+pub mod sym;
 pub mod cmd;
 pub mod crypto;
 pub mod error;
 pub mod options;
 pub mod protocol;
-pub mod search_cmd; // Add this
+pub mod rpc;
+pub mod rpc_server;
 pub mod server;
 pub mod storage;
-pub mod storage_sled; // Add this
-pub mod storage_trait; // Add this
+pub mod storage_trait;
+pub mod storage_sled;
+pub mod admin_meta;
 pub mod tantivy_search;
+pub mod search_cmd;

src/main.rs

@@ -3,6 +3,7 @@
 use tokio::net::TcpListener;
 
 use herodb::server;
+use herodb::rpc_server;
 
 use clap::Parser;
 
@@ -22,17 +23,29 @@ struct Args {
     #[arg(long)]
     debug: bool,
 
-    /// Master encryption key for encrypted databases
+    /// Master encryption key for encrypted databases (deprecated; ignored for data DBs)
     #[arg(long)]
     encryption_key: Option<String>,
 
-    /// Encrypt the database
+    /// Encrypt the database (deprecated; ignored for data DBs)
     #[arg(long)]
     encrypt: bool,
 
+    /// Enable RPC management server
+    #[arg(long)]
+    enable_rpc: bool,
+
+    /// RPC server port (default: 8080)
+    #[arg(long, default_value = "8080")]
+    rpc_port: u16,
+
     /// Use the sled backend
     #[arg(long)]
     sled: bool,
+
+    /// Admin secret used to encrypt DB 0 and authorize admin access (required)
+    #[arg(long)]
+    admin_secret: String,
 }
 
 #[tokio::main]
@@ -47,9 +60,19 @@ async fn main() {
         .await
         .unwrap();
 
+    // deprecation warnings for legacy flags
+    if args.encrypt || args.encryption_key.is_some() {
+        eprintln!("warning: --encrypt and --encryption-key are deprecated and ignored for data DBs. Admin DB 0 is always encrypted with --admin-secret.");
+    }
+    // basic validation for admin secret
+    if args.admin_secret.trim().is_empty() {
+        eprintln!("error: --admin-secret must not be empty");
+        std::process::exit(2);
+    }
+
     // new DB option
     let option = herodb::options::DBOption {
-        dir: args.dir,
+        dir: args.dir.clone(),
         port,
         debug: args.debug,
         encryption_key: args.encryption_key,
@@ -59,14 +82,42 @@ async fn main() {
         } else {
             herodb::options::BackendType::Redb
         },
+        admin_secret: args.admin_secret.clone(),
     };
 
+    let backend = option.backend.clone();
+
+    // Bootstrap admin DB 0 before opening any server storage
+    if let Err(e) = herodb::admin_meta::ensure_bootstrap(&args.dir, backend.clone(), &args.admin_secret) {
+        eprintln!("Failed to bootstrap admin DB 0: {}", e.0);
+        std::process::exit(2);
+    }
+
     // new server
     let server = server::Server::new(option).await;
 
     // Add a small delay to ensure the port is ready
     tokio::time::sleep(std::time::Duration::from_millis(100)).await;
 
+    // Start RPC server if enabled
+    let _rpc_handle = if args.enable_rpc {
+        let rpc_addr = format!("127.0.0.1:{}", args.rpc_port).parse().unwrap();
+        let base_dir = args.dir.clone();
+
+        match rpc_server::start_rpc_server(rpc_addr, base_dir, backend, args.admin_secret.clone()).await {
+            Ok(handle) => {
+                println!("RPC management server started on port {}", args.rpc_port);
+                Some(handle)
+            }
+            Err(e) => {
+                eprintln!("Failed to start RPC server: {}", e);
+                None
+            }
+        }
+    } else {
+        None
+    };
+
     // accept new connections
     loop {
         let stream = listener.accept().await;

src/options.rs

@@ -1,7 +1,8 @@
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub enum BackendType {
     Redb,
     Sled,
+    Tantivy, // Full-text search backend (no KV storage)
 }
 
 #[derive(Debug, Clone)]
@@ -9,7 +10,11 @@ pub struct DBOption {
     pub dir: String,
     pub port: u16,
     pub debug: bool,
+    // Deprecated for data DBs; retained for backward-compat on CLI parsing
     pub encrypt: bool,
+    // Deprecated for data DBs; retained for backward-compat on CLI parsing
     pub encryption_key: Option<String>,
     pub backend: BackendType,
+    // New: required admin secret, used to encrypt DB 0 and authorize admin operations
+    pub admin_secret: String,
 }

src/protocol.rs

@@ -81,21 +81,18 @@ impl Protocol {
     pub fn encode(&self) -> String {
         match self {
             Protocol::SimpleString(s) => format!("+{}\r\n", s),
-            Protocol::BulkString(s) => format!("${}\r\n{}\r\n", s.len(), s),
-            Protocol::Array(ss) => {
+            Protocol::BulkString(s)   => format!("${}\r\n{}\r\n", s.len(), s),
+            Protocol::Array(ss)       => {
                 format!("*{}\r\n", ss.len()) + &ss.iter().map(|x| x.encode()).collect::<String>()
             }
-            Protocol::Null => "$-1\r\n".to_string(),
-            Protocol::Error(s) => format!("-{}\r\n", s), // proper RESP error
+            Protocol::Null            => "$-1\r\n".to_string(),
+            Protocol::Error(s)        => format!("-{}\r\n", s), // proper RESP error
         }
     }
 
     fn parse_simple_string_sfx(protocol: &str) -> Result<(Self, &str), DBError> {
         match protocol.find("\r\n") {
-            Some(x) => Ok((
-                Self::SimpleString(protocol[..x].to_string()),
-                &protocol[x + 2..],
-            )),
+            Some(x) => Ok((Self::SimpleString(protocol[..x].to_string()), &protocol[x + 2..])),
             _ => Err(DBError(format!(
                 "[new simple string] unsupported protocol: {:?}",
                 protocol

src/rpc.rs

@@ -0,0 +1,646 @@
+use std::collections::HashMap;
+use std::sync::Arc;
+use tokio::sync::RwLock;
+use jsonrpsee::{core::RpcResult, proc_macros::rpc};
+use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+
+use crate::server::Server;
+use crate::options::DBOption;
+use crate::admin_meta;
+
+/// Database backend types
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum BackendType {
+    Redb,
+    Sled,
+    Tantivy, // Full-text search backend (no KV storage)
+    // Future: InMemory, Custom(String)
+}
+
+/// Database configuration
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DatabaseConfig {
+    pub name: Option<String>,
+    pub storage_path: Option<String>,
+    pub max_size: Option<u64>,
+    pub redis_version: Option<String>,
+}
+
+/// Database information returned by metadata queries
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DatabaseInfo {
+    pub id: u64,
+    pub name: Option<String>,
+    pub backend: BackendType,
+    pub encrypted: bool,
+    pub redis_version: Option<String>,
+    pub storage_path: Option<String>,
+    pub size_on_disk: Option<u64>,
+    pub key_count: Option<u64>,
+    pub created_at: u64,
+    pub last_access: Option<u64>,
+}
+
+/// Access permissions for database keys
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub enum Permissions {
+    Read,
+    ReadWrite,
+}
+
+
+
+/// Access key information returned by RPC
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AccessKeyInfo {
+    pub hash: String,
+    pub permissions: Permissions,
+    pub created_at: u64,
+}
+
+/// Hash a plaintext key using SHA-256
+pub fn hash_key(key: &str) -> String {
+    let mut hasher = Sha256::new();
+    hasher.update(key.as_bytes());
+    format!("{:x}", hasher.finalize())
+}
+
+/// RPC trait for HeroDB management
+#[rpc(server, client, namespace = "herodb")]
+pub trait Rpc {
+    /// Create a new database with specified configuration
+    #[method(name = "createDatabase")]
+    async fn create_database(
+        &self,
+        backend: BackendType,
+        config: DatabaseConfig,
+        encryption_key: Option<String>,
+    ) -> RpcResult<u64>;
+
+    /// Set encryption for an existing database (write-only key)
+    #[method(name = "setEncryption")]
+    async fn set_encryption(&self, db_id: u64, encryption_key: String) -> RpcResult<bool>;
+
+    /// List all managed databases
+    #[method(name = "listDatabases")]
+    async fn list_databases(&self) -> RpcResult<Vec<DatabaseInfo>>;
+
+    /// Get detailed information about a specific database
+    #[method(name = "getDatabaseInfo")]
+    async fn get_database_info(&self, db_id: u64) -> RpcResult<DatabaseInfo>;
+
+    /// Delete a database
+    #[method(name = "deleteDatabase")]
+    async fn delete_database(&self, db_id: u64) -> RpcResult<bool>;
+
+    /// Get server statistics
+    #[method(name = "getServerStats")]
+    async fn get_server_stats(&self) -> RpcResult<HashMap<String, serde_json::Value>>;
+
+    /// Add an access key to a database
+    #[method(name = "addAccessKey")]
+    async fn add_access_key(&self, db_id: u64, key: String, permissions: String) -> RpcResult<bool>;
+
+    /// Delete an access key from a database
+    #[method(name = "deleteAccessKey")]
+    async fn delete_access_key(&self, db_id: u64, key_hash: String) -> RpcResult<bool>;
+
+    /// List all access keys for a database
+    #[method(name = "listAccessKeys")]
+    async fn list_access_keys(&self, db_id: u64) -> RpcResult<Vec<AccessKeyInfo>>;
+
+    /// Set database public/private status
+    #[method(name = "setDatabasePublic")]
+    async fn set_database_public(&self, db_id: u64, public: bool) -> RpcResult<bool>;
+
+    // ----- Full-text (Tantivy) minimal RPC endpoints -----
+
+    /// Create a new FT index in a Tantivy-backed DB
+    #[method(name = "ftCreate")]
+    async fn ft_create(
+        &self,
+        db_id: u64,
+        index_name: String,
+        schema: Vec<(String, String, Vec<String>)>,
+    ) -> RpcResult<bool>;
+
+    /// Add or replace a document in an FT index
+    #[method(name = "ftAdd")]
+    async fn ft_add(
+        &self,
+        db_id: u64,
+        index_name: String,
+        doc_id: String,
+        score: f64,
+        fields: HashMap<String, String>,
+    ) -> RpcResult<bool>;
+
+    /// Search an FT index
+    #[method(name = "ftSearch")]
+    async fn ft_search(
+        &self,
+        db_id: u64,
+        index_name: String,
+        query: String,
+        filters: Option<Vec<(String, String)>>,
+        limit: Option<usize>,
+        offset: Option<usize>,
+        return_fields: Option<Vec<String>>,
+    ) -> RpcResult<serde_json::Value>;
+
+    /// Delete a document by id from an FT index
+    #[method(name = "ftDel")]
+    async fn ft_del(&self, db_id: u64, index_name: String, doc_id: String) -> RpcResult<bool>;
+
+    /// Get FT index info
+    #[method(name = "ftInfo")]
+    async fn ft_info(&self, db_id: u64, index_name: String) -> RpcResult<serde_json::Value>;
+
+    /// Drop an FT index
+    #[method(name = "ftDrop")]
+    async fn ft_drop(&self, db_id: u64, index_name: String) -> RpcResult<bool>;
+}
+
+/// RPC Server implementation
+pub struct RpcServerImpl {
+    /// Base directory for database files
+    base_dir: String,
+    /// Managed database servers
+    servers: Arc<RwLock<HashMap<u64, Arc<Server>>>>,
+    /// Default backend type
+    backend: crate::options::BackendType,
+    /// Admin secret used to encrypt DB 0 and authorize admin access
+    admin_secret: String,
+}
+
+impl RpcServerImpl {
+    /// Create a new RPC server instance
+    pub fn new(base_dir: String, backend: crate::options::BackendType, admin_secret: String) -> Self {
+        Self {
+            base_dir,
+            servers: Arc::new(RwLock::new(HashMap::new())),
+            backend,
+            admin_secret,
+        }
+    }
+
+    /// Get or create a server instance for the given database ID
+    async fn get_or_create_server(&self, db_id: u64) -> Result<Arc<Server>, jsonrpsee::types::ErrorObjectOwned> {
+        // Check if server already exists
+        {
+            let servers = self.servers.read().await;
+            if let Some(server) = servers.get(&db_id) {
+                return Ok(server.clone());
+            }
+        }
+
+        // Validate existence via admin DB 0 (metadata), not filesystem presence
+        let exists = admin_meta::db_exists(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id)
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        if !exists {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(
+                -32000,
+                format!("Database {} not found", db_id),
+                None::<()>
+            ));
+        }
+
+        // Resolve effective backend for this db from admin meta or filesystem; fallback to default
+        let meta_backend = admin_meta::get_database_backend(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id)
+            .ok()
+            .flatten();
+        let db_path = std::path::PathBuf::from(&self.base_dir).join(format!("{}.db", db_id));
+        let sniffed_backend = if db_path.exists() {
+            if db_path.is_file() {
+                Some(crate::options::BackendType::Redb)
+            } else if db_path.is_dir() {
+                Some(crate::options::BackendType::Sled)
+            } else {
+                None
+            }
+        } else {
+            None
+        };
+        let effective_backend = meta_backend.clone().or(sniffed_backend).unwrap_or(self.backend.clone());
+        if effective_backend != self.backend {
+            eprintln!(
+                "notice: get_or_create_server: db {} backend resolved to {:?} (server default {:?})",
+                db_id, effective_backend, self.backend
+            );
+        }
+        // If we had to sniff (no meta), persist the resolved backend
+        if meta_backend.is_none() {
+            let _ = admin_meta::set_database_backend(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id, effective_backend.clone());
+        }
+
+        // Create server instance with resolved backend
+        let is_tantivy = matches!(effective_backend, crate::options::BackendType::Tantivy);
+        let db_option = DBOption {
+            dir: self.base_dir.clone(),
+            port: 0, // Not used for RPC-managed databases
+            debug: false,
+            encryption_key: None,
+            encrypt: false,
+            backend: effective_backend.clone(),
+            admin_secret: self.admin_secret.clone(),
+        };
+
+        let mut server = Server::new(db_option).await;
+
+        // Set the selected database to the db_id
+        server.selected_db = db_id;
+
+        // Lazily open/create physical storage according to admin meta (per-db encryption)
+        // Skip for Tantivy backend (no KV storage to open)
+        if !is_tantivy {
+            let _ = server.current_storage();
+        }
+
+        // Store the server
+        let mut servers = self.servers.write().await;
+        servers.insert(db_id, Arc::new(server.clone()));
+
+        Ok(Arc::new(server))
+    }
+
+    /// Discover existing database IDs from admin DB 0
+    async fn discover_databases(&self) -> Vec<u64> {
+        admin_meta::list_dbs(&self.base_dir, self.backend.clone(), &self.admin_secret)
+            .unwrap_or_default()
+    }
+
+
+
+
+
+
+    /// Build database file path for given server/db_id
+    fn db_file_path(&self, server: &Server, db_id: u64) -> std::path::PathBuf {
+        std::path::PathBuf::from(&server.option.dir).join(format!("{}.db", db_id))
+    }
+
+    /// Recursively compute size on disk for the database path
+    fn compute_size_on_disk(&self, path: &std::path::Path) -> Option<u64> {
+        fn dir_size(p: &std::path::Path) -> u64 {
+            if p.is_file() {
+                std::fs::metadata(p).map(|m| m.len()).unwrap_or(0)
+            } else if p.is_dir() {
+                let mut total = 0u64;
+                if let Ok(read) = std::fs::read_dir(p) {
+                    for entry in read.flatten() {
+                        total += dir_size(&entry.path());
+                    }
+                }
+                total
+            } else {
+                0
+            }
+        }
+        Some(dir_size(path))
+    }
+
+    /// Extract created and last access times (secs) from a path, with fallbacks
+    fn get_file_times_secs(path: &std::path::Path) -> (u64, Option<u64>) {
+        let now = std::time::SystemTime::now();
+        let created = std::fs::metadata(path)
+            .and_then(|m| m.created().or_else(|_| m.modified()))
+            .unwrap_or(now)
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap_or_default()
+            .as_secs();
+
+        let last_access = std::fs::metadata(path)
+            .and_then(|m| m.accessed())
+            .ok()
+            .and_then(|t| t.duration_since(std::time::UNIX_EPOCH).ok().map(|d| d.as_secs()));
+
+        (created, last_access)
+    }
+
+    /// Compose a DatabaseInfo by probing storage and filesystem, with admin meta for access key count
+    async fn build_database_info(&self, db_id: u64, server: &Server) -> DatabaseInfo {
+        // Probe storage to determine encryption state
+        let storage = server.current_storage().ok();
+        let encrypted = storage.as_ref().map(|s| s.is_encrypted()).unwrap_or(server.option.encrypt);
+
+        // Get actual key count from storage
+        let key_count = storage.as_ref()
+            .and_then(|s| s.dbsize().ok())
+            .map(|count| count as u64);
+
+        // Get database name from admin meta
+        let name = admin_meta::get_database_name(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id)
+            .ok()
+            .flatten();
+
+        // Compute size on disk and timestamps from the DB file path
+        let db_path = self.db_file_path(server, db_id);
+        let size_on_disk = self.compute_size_on_disk(&db_path);
+        let (created_at, last_access) = Self::get_file_times_secs(&db_path);
+
+        let backend = match server.option.backend {
+            crate::options::BackendType::Redb => BackendType::Redb,
+            crate::options::BackendType::Sled => BackendType::Sled,
+            crate::options::BackendType::Tantivy => BackendType::Tantivy,
+        };
+
+        DatabaseInfo {
+            id: db_id,
+            name,
+            backend,
+            encrypted,
+            redis_version: Some("7.0".to_string()),
+            storage_path: Some(server.option.dir.clone()),
+            size_on_disk,
+            key_count,
+            created_at,
+            last_access,
+        }
+    }
+}
+
+#[jsonrpsee::core::async_trait]
+impl RpcServer for RpcServerImpl {
+    async fn create_database(
+        &self,
+        backend: BackendType,
+        config: DatabaseConfig,
+        encryption_key: Option<String>,
+    ) -> RpcResult<u64> {
+        // Allocate new ID via admin DB 0
+        let db_id = admin_meta::allocate_next_id(&self.base_dir, self.backend.clone(), &self.admin_secret)
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+
+        // Persist per-db encryption key in admin DB 0 if provided
+        if let Some(ref key) = encryption_key {
+            admin_meta::set_enc_key(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id, key)
+                .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        }
+
+        // Persist database name if provided
+        if let Some(ref name) = config.name {
+            admin_meta::set_database_name(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id, name)
+                .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        }
+
+        // Ensure base dir exists
+        if let Err(e) = std::fs::create_dir_all(&self.base_dir) {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, format!("Failed to ensure base dir: {}", e), None::<()>));
+        }
+
+        // Map RPC backend to options backend and persist it in admin meta for this db id
+        let opt_backend = match backend {
+            BackendType::Redb => crate::options::BackendType::Redb,
+            BackendType::Sled => crate::options::BackendType::Sled,
+            BackendType::Tantivy => crate::options::BackendType::Tantivy,
+        };
+        admin_meta::set_database_backend(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id, opt_backend.clone())
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+
+        // Create server instance using base_dir, chosen backend and admin secret
+        let is_tantivy_new = matches!(opt_backend, crate::options::BackendType::Tantivy);
+        let option = DBOption {
+            dir: self.base_dir.clone(),
+            port: 0, // Not used for RPC-managed databases
+            debug: false,
+            encryption_key: None,  // per-db key is stored in admin DB 0
+            encrypt: false,        // encryption decided per-db at open time
+            backend: opt_backend.clone(),
+            admin_secret: self.admin_secret.clone(),
+        };
+
+        let mut server = Server::new(option).await;
+        server.selected_db = db_id;
+
+        // Initialize storage to create physical <id>.db with proper encryption from admin meta
+        // Skip for Tantivy backend (no KV storage to initialize)
+        if !is_tantivy_new {
+            let _ = server.current_storage();
+        }
+
+        // Store the server in cache
+        let mut servers = self.servers.write().await;
+        servers.insert(db_id, Arc::new(server));
+
+        Ok(db_id)
+    }
+
+    async fn set_encryption(&self, _db_id: u64, _encryption_key: String) -> RpcResult<bool> {
+        // For now, return false as encryption can only be set during creation
+        let _servers = self.servers.read().await;
+        // TODO: Implement encryption setting for existing databases
+        Ok(false)
+    }
+
+    async fn list_databases(&self) -> RpcResult<Vec<DatabaseInfo>> {
+        let db_ids = self.discover_databases().await;
+        let mut result = Vec::new();
+
+        for db_id in db_ids {
+            if let Ok(server) = self.get_or_create_server(db_id).await {
+                // Build accurate info from storage/meta/fs
+                let info = self.build_database_info(db_id, &server).await;
+                result.push(info);
+            }
+        }
+
+        Ok(result)
+    }
+
+    async fn get_database_info(&self, db_id: u64) -> RpcResult<DatabaseInfo> {
+        let server = self.get_or_create_server(db_id).await?;
+        // Build accurate info from storage/meta/fs
+        let info = self.build_database_info(db_id, &server).await;
+        Ok(info)
+    }
+
+    async fn delete_database(&self, db_id: u64) -> RpcResult<bool> {
+        let mut servers = self.servers.write().await;
+
+        if let Some(_server) = servers.remove(&db_id) {
+            // Clean up database files
+            let db_path = std::path::PathBuf::from(&self.base_dir).join(format!("{}.db", db_id));
+            if db_path.exists() {
+                if db_path.is_dir() {
+                    std::fs::remove_dir_all(&db_path).ok();
+                } else {
+                    std::fs::remove_file(&db_path).ok();
+                }
+            }
+            Ok(true)
+        } else {
+            Ok(false)
+        }
+    }
+
+    async fn get_server_stats(&self) -> RpcResult<HashMap<String, serde_json::Value>> {
+        let db_ids = self.discover_databases().await;
+        let mut stats = HashMap::new();
+
+        
+        stats.insert("total_databases".to_string(), serde_json::json!(db_ids.len()));
+        stats.insert("uptime".to_string(), serde_json::json!(
+            std::time::SystemTime::now()
+                .duration_since(std::time::UNIX_EPOCH)
+                .unwrap()
+                .as_secs()
+        ));
+
+        Ok(stats)
+    }
+
+    // ----- Full-text (Tantivy) minimal RPC endpoints -----
+
+    async fn ft_create(
+        &self,
+        db_id: u64,
+        index_name: String,
+        schema: Vec<(String, String, Vec<String>)>,
+    ) -> RpcResult<bool> {
+        let server = self.get_or_create_server(db_id).await?;
+        if db_id == 0 {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "FT not allowed on DB 0", None::<()>));
+        }
+        if !matches!(server.option.backend, crate::options::BackendType::Tantivy) {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "DB backend is not Tantivy", None::<()>));
+        }
+        crate::search_cmd::ft_create_cmd(&*server, index_name, schema)
+            .await
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(true)
+    }
+
+    async fn ft_add(
+        &self,
+        db_id: u64,
+        index_name: String,
+        doc_id: String,
+        score: f64,
+        fields: HashMap<String, String>,
+    ) -> RpcResult<bool> {
+        let server = self.get_or_create_server(db_id).await?;
+        if db_id == 0 {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "FT not allowed on DB 0", None::<()>));
+        }
+        if !matches!(server.option.backend, crate::options::BackendType::Tantivy) {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "DB backend is not Tantivy", None::<()>));
+        }
+        crate::search_cmd::ft_add_cmd(&*server, index_name, doc_id, score, fields)
+            .await
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(true)
+    }
+
+    async fn ft_search(
+        &self,
+        db_id: u64,
+        index_name: String,
+        query: String,
+        filters: Option<Vec<(String, String)>>,
+        limit: Option<usize>,
+        offset: Option<usize>,
+        return_fields: Option<Vec<String>>,
+    ) -> RpcResult<serde_json::Value> {
+        let server = self.get_or_create_server(db_id).await?;
+        if db_id == 0 {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "FT not allowed on DB 0", None::<()>));
+        }
+        if !matches!(server.option.backend, crate::options::BackendType::Tantivy) {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "DB backend is not Tantivy", None::<()>));
+        }
+        let proto = crate::search_cmd::ft_search_cmd(
+            &*server,
+            index_name,
+            query,
+            filters.unwrap_or_default(),
+            limit,
+            offset,
+            return_fields,
+        )
+        .await
+        .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(serde_json::json!({ "resp": proto.encode() }))
+    }
+
+    async fn ft_del(&self, db_id: u64, index_name: String, doc_id: String) -> RpcResult<bool> {
+        let server = self.get_or_create_server(db_id).await?;
+        if db_id == 0 {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "FT not allowed on DB 0", None::<()>));
+        }
+        if !matches!(server.option.backend, crate::options::BackendType::Tantivy) {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "DB backend is not Tantivy", None::<()>));
+        }
+        crate::search_cmd::ft_del_cmd(&*server, index_name, doc_id)
+            .await
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(true)
+    }
+
+    async fn ft_info(&self, db_id: u64, index_name: String) -> RpcResult<serde_json::Value> {
+        let server = self.get_or_create_server(db_id).await?;
+        if db_id == 0 {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "FT not allowed on DB 0", None::<()>));
+        }
+        if !matches!(server.option.backend, crate::options::BackendType::Tantivy) {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "DB backend is not Tantivy", None::<()>));
+        }
+        let proto = crate::search_cmd::ft_info_cmd(&*server, index_name)
+            .await
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(serde_json::json!({ "resp": proto.encode() }))
+    }
+
+    async fn ft_drop(&self, db_id: u64, index_name: String) -> RpcResult<bool> {
+        let server = self.get_or_create_server(db_id).await?;
+        if db_id == 0 {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "FT not allowed on DB 0", None::<()>));
+        }
+        if !matches!(server.option.backend, crate::options::BackendType::Tantivy) {
+            return Err(jsonrpsee::types::ErrorObjectOwned::owned(-32000, "DB backend is not Tantivy", None::<()>));
+        }
+        crate::search_cmd::ft_drop_cmd(&*server, index_name)
+            .await
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(true)
+    }
+
+    async fn add_access_key(&self, db_id: u64, key: String, permissions: String) -> RpcResult<bool> {
+        let perms = match permissions.to_lowercase().as_str() {
+            "read" => Permissions::Read,
+            "readwrite" => Permissions::ReadWrite,
+            _ => return Err(jsonrpsee::types::ErrorObjectOwned::owned(
+                -32000,
+                "Invalid permissions: use 'read' or 'readwrite'",
+                None::<()>
+            )),
+        };
+
+        admin_meta::add_access_key(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id, &key, perms)
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(true)
+    }
+
+    async fn delete_access_key(&self, db_id: u64, key_hash: String) -> RpcResult<bool> {
+        let ok = admin_meta::delete_access_key(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id, &key_hash)
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(ok)
+    }
+
+    async fn list_access_keys(&self, db_id: u64) -> RpcResult<Vec<AccessKeyInfo>> {
+        let pairs = admin_meta::list_access_keys(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id)
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        let keys: Vec<AccessKeyInfo> = pairs.into_iter().map(|(hash, perm, ts)| AccessKeyInfo {
+            hash,
+            permissions: perm,
+            created_at: ts,
+        }).collect();
+        Ok(keys)
+    }
+
+    async fn set_database_public(&self, db_id: u64, public: bool) -> RpcResult<bool> {
+        admin_meta::set_database_public(&self.base_dir, self.backend.clone(), &self.admin_secret, db_id, public)
+            .map_err(|e| jsonrpsee::types::ErrorObjectOwned::owned(-32000, e.0, None::<()>))?;
+        Ok(true)
+    }
+}

src/rpc_server.rs

@@ -0,0 +1,49 @@
+use std::net::SocketAddr;
+use jsonrpsee::server::{ServerBuilder, ServerHandle};
+use jsonrpsee::RpcModule;
+
+use crate::rpc::{RpcServer, RpcServerImpl};
+
+/// Start the RPC server on the specified address
+pub async fn start_rpc_server(addr: SocketAddr, base_dir: String, backend: crate::options::BackendType, admin_secret: String) -> Result<ServerHandle, Box<dyn std::error::Error + Send + Sync>> {
+    // Create the RPC server implementation
+    let rpc_impl = RpcServerImpl::new(base_dir, backend, admin_secret);
+
+    // Create the RPC module
+    let mut module = RpcModule::new(());
+    module.merge(RpcServer::into_rpc(rpc_impl))?;
+
+    // Build the server with both HTTP and WebSocket support
+    let server = ServerBuilder::default()
+        .build(addr)
+        .await?;
+
+    // Start the server
+    let handle = server.start(module);
+
+    println!("RPC server started on {}", addr);
+
+    Ok(handle)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::time::Duration;
+
+    #[tokio::test]
+    async fn test_rpc_server_startup() {
+        let addr = "127.0.0.1:0".parse().unwrap(); // Use port 0 for auto-assignment
+        let base_dir = "/tmp/test_rpc".to_string();
+        let backend = crate::options::BackendType::Redb; // Default for test
+
+        let handle = start_rpc_server(addr, base_dir, backend, "test-admin".to_string()).await.unwrap();
+
+        // Give the server a moment to start
+        tokio::time::sleep(Duration::from_millis(100)).await;
+
+        // Stop the server
+        handle.stop().unwrap();
+        handle.stopped().await;
+    }
+}

src/search_cmd.rs

@@ -14,32 +14,53 @@ pub async fn ft_create_cmd(
     index_name: String,
     schema: Vec<(String, String, Vec<String>)>,
 ) -> Result<Protocol, DBError> {
+    if server.selected_db == 0 {
+        return Ok(Protocol::err("FT commands are not allowed on DB 0"));
+    }
+    // Enforce Tantivy backend for selected DB
+    let is_tantivy = crate::admin_meta::get_database_backend(
+        &server.option.dir,
+        server.option.backend.clone(),
+        &server.option.admin_secret,
+        server.selected_db,
+    )
+    .ok()
+    .flatten()
+    .map(|b| matches!(b, crate::options::BackendType::Tantivy))
+    .unwrap_or(false);
+    if !is_tantivy {
+        return Ok(Protocol::err("ERR DB backend is not Tantivy; FT.* commands are not allowed"));
+    }
+
     // Parse schema into field definitions
     let mut field_definitions = Vec::new();
-
     for (field_name, field_type, options) in schema {
         let field_def = match field_type.to_uppercase().as_str() {
             "TEXT" => {
-                let mut weight = 1.0;
                 let mut sortable = false;
                 let mut no_index = false;
-
-                for opt in &options {
-                    match opt.to_uppercase().as_str() {
+                // Weight is not used in current implementation
+                let mut _weight = 1.0f32;
+                let mut i = 0;
+                while i < options.len() {
+                    match options[i].to_uppercase().as_str() {
                         "WEIGHT" => {
-                            // Next option should be the weight value
-                            if let Some(idx) = options.iter().position(|x| x == opt) {
-                                if idx + 1 < options.len() {
-                                    weight = options[idx + 1].parse().unwrap_or(1.0);
-                                }
+                            if i + 1 < options.len() {
+                                _weight = options[i + 1].parse::<f32>().unwrap_or(1.0);
+                                i += 2;
+                                continue;
                             }
                         }
-                        "SORTABLE" => sortable = true,
-                        "NOINDEX" => no_index = true,
+                        "SORTABLE" => {
+                            sortable = true;
+                        }
+                        "NOINDEX" => {
+                            no_index = true;
+                        }
                         _ => {}
                     }
+                    i += 1;
                 }
-
                 FieldDef::Text {
                     stored: true,
                     indexed: !no_index,
@@ -48,14 +69,13 @@ pub async fn ft_create_cmd(
                 }
             }
             "NUMERIC" => {
+                // default to F64
                 let mut sortable = false;
-
                 for opt in &options {
                     if opt.to_uppercase() == "SORTABLE" {
                         sortable = true;
                     }
                 }
-
                 FieldDef::Numeric {
                     stored: true,
                     indexed: true,
@@ -66,19 +86,23 @@ pub async fn ft_create_cmd(
             "TAG" => {
                 let mut separator = ",".to_string();
                 let mut case_sensitive = false;
-
-                for i in 0..options.len() {
+                let mut i = 0;
+                while i < options.len() {
                     match options[i].to_uppercase().as_str() {
                         "SEPARATOR" => {
                             if i + 1 < options.len() {
                                 separator = options[i + 1].clone();
+                                i += 2;
+                                continue;
                             }
                         }
-                        "CASESENSITIVE" => case_sensitive = true,
+                        "CASESENSITIVE" => {
+                            case_sensitive = true;
+                        }
                         _ => {}
                     }
+                    i += 1;
                 }
-
                 FieldDef::Tag {
                     stored: true,
                     separator,
@@ -90,20 +114,12 @@ pub async fn ft_create_cmd(
                 return Err(DBError(format!("Unknown field type: {}", field_type)));
             }
         };
-
         field_definitions.push((field_name, field_def));
     }
 
     // Create the search index
     let search_path = server.search_index_path();
     let config = IndexConfig::default();
-
-    println!(
-        "Creating search index '{}' at path: {:?}",
-        index_name, search_path
-    );
-    println!("Field definitions: {:?}", field_definitions);
-
     let search_index = TantivySearch::new_with_schema(
         search_path,
         index_name.clone(),
@@ -111,8 +127,6 @@ pub async fn ft_create_cmd(
         Some(config),
     )?;
 
-    println!("Search index '{}' created successfully", index_name);
-
     // Store in registry
     let mut indexes = server.search_indexes.write().unwrap();
     indexes.insert(index_name, Arc::new(search_index));
@@ -127,14 +141,28 @@ pub async fn ft_add_cmd(
     _score: f64,
     fields: HashMap<String, String>,
 ) -> Result<Protocol, DBError> {
+    if server.selected_db == 0 {
+        return Ok(Protocol::err("FT commands are not allowed on DB 0"));
+    }
+    // Enforce Tantivy backend for selected DB
+    let is_tantivy = crate::admin_meta::get_database_backend(
+        &server.option.dir,
+        server.option.backend.clone(),
+        &server.option.admin_secret,
+        server.selected_db,
+    )
+    .ok()
+    .flatten()
+    .map(|b| matches!(b, crate::options::BackendType::Tantivy))
+    .unwrap_or(false);
+    if !is_tantivy {
+        return Ok(Protocol::err("ERR DB backend is not Tantivy; FT.* commands are not allowed"));
+    }
     let indexes = server.search_indexes.read().unwrap();
-
     let search_index = indexes
         .get(&index_name)
         .ok_or_else(|| DBError(format!("Index '{}' not found", index_name)))?;
-
     search_index.add_document_with_fields(&doc_id, fields)?;
-
     Ok(Protocol::SimpleString("OK".to_string()))
 }
 
@@ -147,13 +175,28 @@ pub async fn ft_search_cmd(
     offset: Option<usize>,
     return_fields: Option<Vec<String>>,
 ) -> Result<Protocol, DBError> {
+    if server.selected_db == 0 {
+        return Ok(Protocol::err("FT commands are not allowed on DB 0"));
+    }
+    // Enforce Tantivy backend for selected DB
+    let is_tantivy = crate::admin_meta::get_database_backend(
+        &server.option.dir,
+        server.option.backend.clone(),
+        &server.option.admin_secret,
+        server.selected_db,
+    )
+    .ok()
+    .flatten()
+    .map(|b| matches!(b, crate::options::BackendType::Tantivy))
+    .unwrap_or(false);
+    if !is_tantivy {
+        return Ok(Protocol::err("ERR DB backend is not Tantivy; FT.* commands are not allowed"));
+    }
     let indexes = server.search_indexes.read().unwrap();
-
     let search_index = indexes
         .get(&index_name)
         .ok_or_else(|| DBError(format!("Index '{}' not found", index_name)))?;
 
-    // Convert filters to search filters
     let search_filters = filters
         .into_iter()
         .map(|(field, value)| Filter {
@@ -175,22 +218,17 @@ pub async fn ft_search_cmd(
 
     // Format results as Redis protocol
     let mut response = Vec::new();
-
     // First element is the total count
     response.push(Protocol::SimpleString(results.total.to_string()));
-
     // Then each document
     for doc in results.documents {
         let mut doc_array = Vec::new();
-
         // Add document ID if it exists
         if let Some(id) = doc.fields.get("_id") {
             doc_array.push(Protocol::BulkString(id.clone()));
         }
-
         // Add score
         doc_array.push(Protocol::BulkString(doc.score.to_string()));
-
         // Add fields as key-value pairs
         for (field_name, field_value) in doc.fields {
             if field_name != "_id" {
@@ -198,7 +236,6 @@ pub async fn ft_search_cmd(
                 doc_array.push(Protocol::BulkString(field_value));
             }
         }
-
         response.push(Protocol::Array(doc_array));
     }
 
@@ -210,40 +247,64 @@ pub async fn ft_del_cmd(
     index_name: String,
     doc_id: String,
 ) -> Result<Protocol, DBError> {
+    if server.selected_db == 0 {
+        return Ok(Protocol::err("FT commands are not allowed on DB 0"));
+    }
+    // Enforce Tantivy backend for selected DB
+    let is_tantivy = crate::admin_meta::get_database_backend(
+        &server.option.dir,
+        server.option.backend.clone(),
+        &server.option.admin_secret,
+        server.selected_db,
+    )
+    .ok()
+    .flatten()
+    .map(|b| matches!(b, crate::options::BackendType::Tantivy))
+    .unwrap_or(false);
+    if !is_tantivy {
+        return Ok(Protocol::err("ERR DB backend is not Tantivy; FT.* commands are not allowed"));
+    }
     let indexes = server.search_indexes.read().unwrap();
-
     let _search_index = indexes
         .get(&index_name)
         .ok_or_else(|| DBError(format!("Index '{}' not found", index_name)))?;
-
-    // For now, return success
-    // In a full implementation, we'd need to add a delete method to TantivySearch
+    // Not fully implemented yet: Tantivy delete by term would require a writer session and commit coordination.
     println!("Deleting document '{}' from index '{}'", doc_id, index_name);
-
     Ok(Protocol::SimpleString("1".to_string()))
 }
 
 pub async fn ft_info_cmd(server: &Server, index_name: String) -> Result<Protocol, DBError> {
+    if server.selected_db == 0 {
+        return Ok(Protocol::err("FT commands are not allowed on DB 0"));
+    }
+    // Enforce Tantivy backend for selected DB
+    let is_tantivy = crate::admin_meta::get_database_backend(
+        &server.option.dir,
+        server.option.backend.clone(),
+        &server.option.admin_secret,
+        server.selected_db,
+    )
+    .ok()
+    .flatten()
+    .map(|b| matches!(b, crate::options::BackendType::Tantivy))
+    .unwrap_or(false);
+    if !is_tantivy {
+        return Ok(Protocol::err("ERR DB backend is not Tantivy; FT.* commands are not allowed"));
+    }
     let indexes = server.search_indexes.read().unwrap();
-
     let search_index = indexes
         .get(&index_name)
         .ok_or_else(|| DBError(format!("Index '{}' not found", index_name)))?;
-
     let info = search_index.get_info()?;
 
     // Format info as Redis protocol
     let mut response = Vec::new();
-
     response.push(Protocol::BulkString("index_name".to_string()));
     response.push(Protocol::BulkString(info.name));
-
     response.push(Protocol::BulkString("num_docs".to_string()));
     response.push(Protocol::BulkString(info.num_docs.to_string()));
-
     response.push(Protocol::BulkString("num_fields".to_string()));
     response.push(Protocol::BulkString(info.fields.len().to_string()));
-
     response.push(Protocol::BulkString("fields".to_string()));
     let fields_str = info
         .fields
@@ -252,22 +313,40 @@ pub async fn ft_info_cmd(server: &Server, index_name: String) -> Result<Protocol
         .collect::<Vec<_>>()
         .join(", ");
     response.push(Protocol::BulkString(fields_str));
-
     Ok(Protocol::Array(response))
 }
 
 pub async fn ft_drop_cmd(server: &Server, index_name: String) -> Result<Protocol, DBError> {
-    let mut indexes = server.search_indexes.write().unwrap();
-
-    if indexes.remove(&index_name).is_some() {
-        // Also remove the index files from disk
-        let index_path = server.search_index_path().join(&index_name);
-        if index_path.exists() {
-            std::fs::remove_dir_all(index_path)
-                .map_err(|e| DBError(format!("Failed to remove index files: {}", e)))?;
-        }
-        Ok(Protocol::SimpleString("OK".to_string()))
-    } else {
-        Err(DBError(format!("Index '{}' not found", index_name)))
+    if server.selected_db == 0 {
+        return Ok(Protocol::err("FT commands are not allowed on DB 0"));
     }
-}
+    // Enforce Tantivy backend for selected DB
+    let is_tantivy = crate::admin_meta::get_database_backend(
+        &server.option.dir,
+        server.option.backend.clone(),
+        &server.option.admin_secret,
+        server.selected_db,
+    )
+    .ok()
+    .flatten()
+    .map(|b| matches!(b, crate::options::BackendType::Tantivy))
+    .unwrap_or(false);
+    if !is_tantivy {
+        return Ok(Protocol::err("ERR DB backend is not Tantivy; FT.* commands are not allowed"));
+    }
+
+    // Remove from registry
+    {
+        let mut indexes = server.search_indexes.write().unwrap();
+        indexes.remove(&index_name);
+    }
+
+    // Remove the index files from disk
+    let index_path = server.search_index_path().join(&index_name);
+    if index_path.exists() {
+        std::fs::remove_dir_all(&index_path)
+            .map_err(|e| DBError(format!("Failed to remove index files: {}", e)))?;
+    }
+
+    Ok(Protocol::SimpleString("OK".to_string()))
+}

src/server.rs

@@ -1,10 +1,9 @@
 use core::str;
 use std::collections::HashMap;
 use std::sync::Arc;
-use std::sync::RwLock;
 use tokio::io::AsyncReadExt;
 use tokio::io::AsyncWriteExt;
-use tokio::sync::{oneshot, Mutex};
+use tokio::sync::{Mutex, oneshot};
 
 use std::sync::atomic::{AtomicU64, Ordering};
 
@@ -12,19 +11,20 @@ use crate::cmd::Cmd;
 use crate::error::DBError;
 use crate::options;
 use crate::protocol::Protocol;
-use crate::storage::Storage;
-use crate::storage_sled::SledStorage;
 use crate::storage_trait::StorageBackend;
-use crate::tantivy_search::TantivySearch;
+use crate::admin_meta;
 
 #[derive(Clone)]
 pub struct Server {
-    pub db_cache: Arc<RwLock<HashMap<u64, Arc<dyn StorageBackend>>>>,
-    pub search_indexes: Arc<RwLock<HashMap<String, Arc<TantivySearch>>>>,
+    pub db_cache: std::sync::Arc<std::sync::RwLock<HashMap<u64, Arc<dyn StorageBackend>>>>,
     pub option: options::DBOption,
     pub client_name: Option<String>,
     pub selected_db: u64, // Changed from usize to u64
     pub queued_cmd: Option<Vec<(Cmd, Protocol)>>,
+    pub current_permissions: Option<crate::rpc::Permissions>,
+
+    // In-memory registry of Tantivy search indexes for this server
+    pub search_indexes: Arc<std::sync::RwLock<HashMap<String, Arc<crate::tantivy_search::TantivySearch>>>>,
 
     // BLPOP waiter registry: per (db_index, key) FIFO of waiters
     pub list_waiters: Arc<Mutex<HashMap<u64, HashMap<String, Vec<Waiter>>>>>,
@@ -46,18 +46,31 @@ pub enum PopSide {
 impl Server {
     pub async fn new(option: options::DBOption) -> Self {
         Server {
-            db_cache: Arc::new(RwLock::new(HashMap::new())),
-            search_indexes: Arc::new(RwLock::new(HashMap::new())),
+            db_cache: Arc::new(std::sync::RwLock::new(HashMap::new())),
             option,
             client_name: None,
             selected_db: 0,
             queued_cmd: None,
-
+            current_permissions: None,
+    
+            search_indexes: Arc::new(std::sync::RwLock::new(HashMap::new())),
             list_waiters: Arc::new(Mutex::new(HashMap::new())),
             waiter_seq: Arc::new(AtomicU64::new(1)),
         }
     }
 
+    // Path where search indexes are stored, namespaced per selected DB:
+    // <base_dir>/search_indexes/<db_id>
+    pub fn search_index_path(&self) -> std::path::PathBuf {
+        let base = std::path::PathBuf::from(&self.option.dir)
+            .join("search_indexes")
+            .join(self.selected_db.to_string());
+        if !base.exists() {
+            let _ = std::fs::create_dir_all(&base);
+        }
+        base
+    }
+
     pub fn current_storage(&self) -> Result<Arc<dyn StorageBackend>, DBError> {
         let mut cache = self.db_cache.write().unwrap();
 
@@ -65,58 +78,42 @@ impl Server {
             return Ok(storage.clone());
         }
 
-        // Create new database file
-        let db_file_path = std::path::PathBuf::from(self.option.dir.clone())
-            .join(format!("{}.db", self.selected_db));
-
-        // Ensure the directory exists before creating the database file
-        if let Some(parent_dir) = db_file_path.parent() {
-            std::fs::create_dir_all(parent_dir).map_err(|e| {
-                DBError(format!(
-                    "Failed to create directory {}: {}",
-                    parent_dir.display(),
-                    e
-                ))
-            })?;
-        }
-
-        println!("Creating new db file: {}", db_file_path.display());
-
-        let storage: Arc<dyn StorageBackend> = match self.option.backend {
-            options::BackendType::Redb => Arc::new(Storage::new(
-                db_file_path,
-                self.should_encrypt_db(self.selected_db),
-                self.option.encryption_key.as_deref(),
-            )?),
-            options::BackendType::Sled => Arc::new(SledStorage::new(
-                db_file_path,
-                self.should_encrypt_db(self.selected_db),
-                self.option.encryption_key.as_deref(),
-            )?),
+        // Use process-wide shared handles to avoid sled/reDB double-open lock contention.
+        let storage = if self.selected_db == 0 {
+            // Admin DB 0: always via singleton
+            admin_meta::open_admin_storage(
+                &self.option.dir,
+                self.option.backend.clone(),
+                &self.option.admin_secret,
+            )?
+        } else {
+            // Data DBs: via global registry keyed by id
+            admin_meta::open_data_storage(
+                &self.option.dir,
+                self.option.backend.clone(),
+                &self.option.admin_secret,
+                self.selected_db,
+            )?
         };
 
         cache.insert(self.selected_db, storage.clone());
         Ok(storage)
     }
+    
 
-    fn should_encrypt_db(&self, db_index: u64) -> bool {
-        // DB 0-9 are non-encrypted, DB 10+ are encrypted
-        self.option.encrypt && db_index >= 10
+    /// Check if current permissions allow read operations
+    pub fn has_read_permission(&self) -> bool {
+        matches!(self.current_permissions, Some(crate::rpc::Permissions::Read) | Some(crate::rpc::Permissions::ReadWrite))
     }
 
-    // Add method to get search index path
-    pub fn search_index_path(&self) -> std::path::PathBuf {
-        std::path::PathBuf::from(&self.option.dir).join("search_indexes")
+    /// Check if current permissions allow write operations
+    pub fn has_write_permission(&self) -> bool {
+        matches!(self.current_permissions, Some(crate::rpc::Permissions::ReadWrite))
     }
 
     // ----- BLPOP waiter helpers -----
 
-    pub async fn register_waiter(
-        &self,
-        db_index: u64,
-        key: &str,
-        side: PopSide,
-    ) -> (u64, oneshot::Receiver<(String, String)>) {
+    pub async fn register_waiter(&self, db_index: u64, key: &str, side: PopSide) -> (u64, oneshot::Receiver<(String, String)>) {
         let id = self.waiter_seq.fetch_add(1, Ordering::Relaxed);
         let (tx, rx) = oneshot::channel::<(String, String)>();
 
@@ -192,7 +189,10 @@ impl Server {
         Ok(())
     }
 
-    pub async fn handle(&mut self, mut stream: tokio::net::TcpStream) -> Result<(), DBError> {
+    pub async fn handle(
+        &mut self,
+        mut stream: tokio::net::TcpStream,
+    ) -> Result<(), DBError> {
         // Accumulate incoming bytes to handle partial RESP frames
         let mut acc = String::new();
         let mut buf = vec![0u8; 8192];
@@ -229,10 +229,7 @@ impl Server {
                 acc = remaining.to_string();
 
                 if self.option.debug {
-                    println!(
-                        "\x1b[34;1mgot command: {:?}, protocol: {:?}\x1b[0m",
-                        cmd, protocol
-                    );
+                    println!("\x1b[34;1mgot command: {:?}, protocol: {:?}\x1b[0m", cmd, protocol);
                 } else {
                     println!("got command: {:?}, protocol: {:?}", cmd, protocol);
                 }

src/storage/mod.rs

@@ -12,9 +12,9 @@ use crate::error::DBError;
 
 // Re-export modules
 mod storage_basic;
-mod storage_extra;
 mod storage_hset;
 mod storage_lists;
+mod storage_extra;
 
 // Re-export implementations
 // Note: These imports are used by the impl blocks in the submodules
@@ -28,8 +28,7 @@ const STRINGS_TABLE: TableDefinition<&str, &[u8]> = TableDefinition::new("string
 const HASHES_TABLE: TableDefinition<(&str, &str), &[u8]> = TableDefinition::new("hashes");
 const LISTS_TABLE: TableDefinition<&str, &[u8]> = TableDefinition::new("lists");
 const STREAMS_META_TABLE: TableDefinition<&str, &[u8]> = TableDefinition::new("streams_meta");
-const STREAMS_DATA_TABLE: TableDefinition<(&str, &str), &[u8]> =
-    TableDefinition::new("streams_data");
+const STREAMS_DATA_TABLE: TableDefinition<(&str, &str), &[u8]> = TableDefinition::new("streams_data");
 const ENCRYPTED_TABLE: TableDefinition<&str, u8> = TableDefinition::new("encrypted");
 const EXPIRATION_TABLE: TableDefinition<&str, u64> = TableDefinition::new("expiration");
 
@@ -56,13 +55,9 @@ pub struct Storage {
 }
 
 impl Storage {
-    pub fn new(
-        path: impl AsRef<Path>,
-        should_encrypt: bool,
-        master_key: Option<&str>,
-    ) -> Result<Self, DBError> {
+    pub fn new(path: impl AsRef<Path>, should_encrypt: bool, master_key: Option<&str>) -> Result<Self, DBError> {
         let db = Database::create(path)?;
-
+        
         // Create tables if they don't exist
         let write_txn = db.begin_write()?;
         {
@@ -76,28 +71,23 @@ impl Storage {
             let _ = write_txn.open_table(EXPIRATION_TABLE)?;
         }
         write_txn.commit()?;
-
+        
         // Check if database was previously encrypted
         let read_txn = db.begin_read()?;
         let encrypted_table = read_txn.open_table(ENCRYPTED_TABLE)?;
-        let was_encrypted = encrypted_table
-            .get("encrypted")?
-            .map(|v| v.value() == 1)
-            .unwrap_or(false);
+        let was_encrypted = encrypted_table.get("encrypted")?.map(|v| v.value() == 1).unwrap_or(false);
         drop(read_txn);
-
+        
         let crypto = if should_encrypt || was_encrypted {
             if let Some(key) = master_key {
                 Some(CryptoFactory::new(key.as_bytes()))
             } else {
-                return Err(DBError(
-                    "Encryption requested but no master key provided".to_string(),
-                ));
+                return Err(DBError("Encryption requested but no master key provided".to_string()));
             }
         } else {
             None
         };
-
+        
         // If we're enabling encryption for the first time, mark it
         if should_encrypt && !was_encrypted {
             let write_txn = db.begin_write()?;
@@ -107,10 +97,13 @@ impl Storage {
             }
             write_txn.commit()?;
         }
-
-        Ok(Storage { db, crypto })
+        
+        Ok(Storage {
+            db,
+            crypto,
+        })
     }
-
+    
     pub fn is_encrypted(&self) -> bool {
         self.crypto.is_some()
     }
@@ -123,7 +116,7 @@ impl Storage {
             Ok(data.to_vec())
         }
     }
-
+    
     fn decrypt_if_needed(&self, data: &[u8]) -> Result<Vec<u8>, DBError> {
         if let Some(crypto) = &self.crypto {
             Ok(crypto.decrypt(data)?)
@@ -172,22 +165,11 @@ impl StorageBackend for Storage {
         self.get_key_type(key)
     }
 
-    fn scan(
-        &self,
-        cursor: u64,
-        pattern: Option<&str>,
-        count: Option<u64>,
-    ) -> Result<(u64, Vec<(String, String)>), DBError> {
+    fn scan(&self, cursor: u64, pattern: Option<&str>, count: Option<u64>) -> Result<(u64, Vec<(String, String)>), DBError> {
         self.scan(cursor, pattern, count)
     }
 
-    fn hscan(
-        &self,
-        key: &str,
-        cursor: u64,
-        pattern: Option<&str>,
-        count: Option<u64>,
-    ) -> Result<(u64, Vec<(String, String)>), DBError> {
+    fn hscan(&self, key: &str, cursor: u64, pattern: Option<&str>, count: Option<u64>) -> Result<(u64, Vec<(String, String)>), DBError> {
         self.hscan(key, cursor, pattern, count)
     }
 
@@ -294,7 +276,7 @@ impl StorageBackend for Storage {
     fn is_encrypted(&self) -> bool {
         self.is_encrypted()
     }
-
+    
     fn info(&self) -> Result<Vec<(String, String)>, DBError> {
         self.info()
     }
@@ -302,4 +284,4 @@ impl StorageBackend for Storage {
     fn clone_arc(&self) -> Arc<dyn StorageBackend> {
         unimplemented!("Storage cloning not yet implemented for redb backend")
     }
-}
+}

src/storage/storage_basic.rs

@@ -1,6 +1,6 @@
-use super::*;
+use redb::{ReadableTable};
 use crate::error::DBError;
-use redb::ReadableTable;
+use super::*;
 
 impl Storage {
     pub fn flushdb(&self) -> Result<(), DBError> {
@@ -15,17 +15,11 @@ impl Storage {
             let mut expiration_table = write_txn.open_table(EXPIRATION_TABLE)?;
 
             // inefficient, but there is no other way
-            let keys: Vec<String> = types_table
-                .iter()?
-                .map(|item| item.unwrap().0.value().to_string())
-                .collect();
+            let keys: Vec<String> = types_table.iter()?.map(|item| item.unwrap().0.value().to_string()).collect();
             for key in keys {
                 types_table.remove(key.as_str())?;
             }
-            let keys: Vec<String> = strings_table
-                .iter()?
-                .map(|item| item.unwrap().0.value().to_string())
-                .collect();
+            let keys: Vec<String> = strings_table.iter()?.map(|item| item.unwrap().0.value().to_string()).collect();
             for key in keys {
                 strings_table.remove(key.as_str())?;
             }
@@ -40,35 +34,23 @@ impl Storage {
             for (key, field) in keys {
                 hashes_table.remove((key.as_str(), field.as_str()))?;
             }
-            let keys: Vec<String> = lists_table
-                .iter()?
-                .map(|item| item.unwrap().0.value().to_string())
-                .collect();
+            let keys: Vec<String> = lists_table.iter()?.map(|item| item.unwrap().0.value().to_string()).collect();
             for key in keys {
                 lists_table.remove(key.as_str())?;
             }
-            let keys: Vec<String> = streams_meta_table
-                .iter()?
-                .map(|item| item.unwrap().0.value().to_string())
-                .collect();
+            let keys: Vec<String> = streams_meta_table.iter()?.map(|item| item.unwrap().0.value().to_string()).collect();
             for key in keys {
                 streams_meta_table.remove(key.as_str())?;
             }
-            let keys: Vec<(String, String)> = streams_data_table
-                .iter()?
-                .map(|item| {
-                    let binding = item.unwrap();
-                    let (key, field) = binding.0.value();
-                    (key.to_string(), field.to_string())
-                })
-                .collect();
+            let keys: Vec<(String,String)> = streams_data_table.iter()?.map(|item| {
+                let binding = item.unwrap();
+                let (key, field) = binding.0.value();
+                (key.to_string(), field.to_string())
+            }).collect();
             for (key, field) in keys {
                 streams_data_table.remove((key.as_str(), field.as_str()))?;
             }
-            let keys: Vec<String> = expiration_table
-                .iter()?
-                .map(|item| item.unwrap().0.value().to_string())
-                .collect();
+            let keys: Vec<String> = expiration_table.iter()?.map(|item| item.unwrap().0.value().to_string()).collect();
             for key in keys {
                 expiration_table.remove(key.as_str())?;
             }
@@ -80,7 +62,7 @@ impl Storage {
     pub fn get_key_type(&self, key: &str) -> Result<Option<String>, DBError> {
         let read_txn = self.db.begin_read()?;
         let table = read_txn.open_table(TYPES_TABLE)?;
-
+        
         // Before returning type, check for expiration
         if let Some(type_val) = table.get(key)? {
             if type_val.value() == "string" {
@@ -101,7 +83,7 @@ impl Storage {
     // ✅ ENCRYPTION APPLIED: Value is encrypted/decrypted
     pub fn get(&self, key: &str) -> Result<Option<String>, DBError> {
         let read_txn = self.db.begin_read()?;
-
+        
         let types_table = read_txn.open_table(TYPES_TABLE)?;
         match types_table.get(key)? {
             Some(type_val) if type_val.value() == "string" => {
@@ -114,7 +96,7 @@ impl Storage {
                         return Ok(None);
                     }
                 }
-
+                
                 // Get and decrypt value
                 let strings_table = read_txn.open_table(STRINGS_TABLE)?;
                 match strings_table.get(key)? {
@@ -133,21 +115,21 @@ impl Storage {
     // ✅ ENCRYPTION APPLIED: Value is encrypted before storage
     pub fn set(&self, key: String, value: String) -> Result<(), DBError> {
         let write_txn = self.db.begin_write()?;
-
+        
         {
             let mut types_table = write_txn.open_table(TYPES_TABLE)?;
             types_table.insert(key.as_str(), "string")?;
-
+            
             let mut strings_table = write_txn.open_table(STRINGS_TABLE)?;
             // Only encrypt the value, not expiration
             let encrypted = self.encrypt_if_needed(value.as_bytes())?;
             strings_table.insert(key.as_str(), encrypted.as_slice())?;
-
+            
             // Remove any existing expiration since this is a regular SET
             let mut expiration_table = write_txn.open_table(EXPIRATION_TABLE)?;
             expiration_table.remove(key.as_str())?;
         }
-
+        
         write_txn.commit()?;
         Ok(())
     }
@@ -155,42 +137,41 @@ impl Storage {
     // ✅ ENCRYPTION APPLIED: Value is encrypted before storage
     pub fn setx(&self, key: String, value: String, expire_ms: u128) -> Result<(), DBError> {
         let write_txn = self.db.begin_write()?;
-
+        
         {
             let mut types_table = write_txn.open_table(TYPES_TABLE)?;
             types_table.insert(key.as_str(), "string")?;
-
+            
             let mut strings_table = write_txn.open_table(STRINGS_TABLE)?;
             // Only encrypt the value
             let encrypted = self.encrypt_if_needed(value.as_bytes())?;
             strings_table.insert(key.as_str(), encrypted.as_slice())?;
-
+            
             // Store expiration separately (unencrypted)
             let mut expiration_table = write_txn.open_table(EXPIRATION_TABLE)?;
             let expires_at = expire_ms + now_in_millis();
             expiration_table.insert(key.as_str(), &(expires_at as u64))?;
         }
-
+        
         write_txn.commit()?;
         Ok(())
     }
 
     pub fn del(&self, key: String) -> Result<(), DBError> {
         let write_txn = self.db.begin_write()?;
-
+        
         {
             let mut types_table = write_txn.open_table(TYPES_TABLE)?;
             let mut strings_table = write_txn.open_table(STRINGS_TABLE)?;
-            let mut hashes_table: redb::Table<(&str, &str), &[u8]> =
-                write_txn.open_table(HASHES_TABLE)?;
+            let mut hashes_table: redb::Table<(&str, &str), &[u8]> = write_txn.open_table(HASHES_TABLE)?;
             let mut lists_table = write_txn.open_table(LISTS_TABLE)?;
-
+            
             // Remove from type table
             types_table.remove(key.as_str())?;
-
+            
             // Remove from strings table
             strings_table.remove(key.as_str())?;
-
+            
             // Remove all hash fields for this key
             let mut to_remove = Vec::new();
             let mut iter = hashes_table.iter()?;
@@ -202,19 +183,19 @@ impl Storage {
                 }
             }
             drop(iter);
-
+            
             for (hash_key, field) in to_remove {
                 hashes_table.remove((hash_key.as_str(), field.as_str()))?;
             }
 
             // Remove from lists table
             lists_table.remove(key.as_str())?;
-
+            
             // Also remove expiration
             let mut expiration_table = write_txn.open_table(EXPIRATION_TABLE)?;
             expiration_table.remove(key.as_str())?;
         }
-
+        
         write_txn.commit()?;
         Ok(())
     }
@@ -222,7 +203,7 @@ impl Storage {
     pub fn keys(&self, pattern: &str) -> Result<Vec<String>, DBError> {
         let read_txn = self.db.begin_read()?;
         let table = read_txn.open_table(TYPES_TABLE)?;
-
+        
         let mut keys = Vec::new();
         let mut iter = table.iter()?;
         while let Some(entry) = iter.next() {
@@ -231,7 +212,7 @@ impl Storage {
                 keys.push(key);
             }
         }
-
+        
         Ok(keys)
     }
 }
@@ -261,4 +242,4 @@ impl Storage {
         }
         Ok(count)
     }
-}
+}

src/storage/storage_extra.rs

@@ -1,29 +1,24 @@
-use super::*;
+use redb::{ReadableTable};
 use crate::error::DBError;
-use redb::ReadableTable;
+use super::*;
 
 impl Storage {
     // ✅ ENCRYPTION APPLIED: Values are decrypted after retrieval
-    pub fn scan(
-        &self,
-        cursor: u64,
-        pattern: Option<&str>,
-        count: Option<u64>,
-    ) -> Result<(u64, Vec<(String, String)>), DBError> {
+    pub fn scan(&self, cursor: u64, pattern: Option<&str>, count: Option<u64>) -> Result<(u64, Vec<(String, String)>), DBError> {
         let read_txn = self.db.begin_read()?;
         let types_table = read_txn.open_table(TYPES_TABLE)?;
         let strings_table = read_txn.open_table(STRINGS_TABLE)?;
-
+        
         let mut result = Vec::new();
         let mut current_cursor = 0u64;
         let limit = count.unwrap_or(10) as usize;
-
+        
         let mut iter = types_table.iter()?;
         while let Some(entry) = iter.next() {
             let entry = entry?;
             let key = entry.0.value().to_string();
             let key_type = entry.1.value().to_string();
-
+            
             if current_cursor >= cursor {
                 // Apply pattern matching if specified
                 let matches = if let Some(pat) = pattern {
@@ -31,7 +26,7 @@ impl Storage {
                 } else {
                     true
                 };
-
+                
                 if matches {
                     // For scan, we return key-value pairs for string types
                     if key_type == "string" {
@@ -46,7 +41,7 @@ impl Storage {
                         // For non-string types, just return the key with type as value
                         result.push((key, key_type));
                     }
-
+                    
                     if result.len() >= limit {
                         break;
                     }
@@ -54,19 +49,15 @@ impl Storage {
             }
             current_cursor += 1;
         }
-
-        let next_cursor = if result.len() < limit {
-            0
-        } else {
-            current_cursor
-        };
+        
+        let next_cursor = if result.len() < limit { 0 } else { current_cursor };
         Ok((next_cursor, result))
     }
 
     pub fn ttl(&self, key: &str) -> Result<i64, DBError> {
         let read_txn = self.db.begin_read()?;
         let types_table = read_txn.open_table(TYPES_TABLE)?;
-
+        
         match types_table.get(key)? {
             Some(type_val) if type_val.value() == "string" => {
                 let expiration_table = read_txn.open_table(EXPIRATION_TABLE)?;
@@ -84,14 +75,14 @@ impl Storage {
                 }
             }
             Some(_) => Ok(-1), // Key exists but is not a string (no expiration support for other types)
-            None => Ok(-2),    // Key does not exist
+            None => Ok(-2), // Key does not exist
         }
     }
 
     pub fn exists(&self, key: &str) -> Result<bool, DBError> {
         let read_txn = self.db.begin_read()?;
         let types_table = read_txn.open_table(TYPES_TABLE)?;
-
+        
         match types_table.get(key)? {
             Some(type_val) if type_val.value() == "string" => {
                 // Check if string key has expired
@@ -104,7 +95,7 @@ impl Storage {
                 Ok(true)
             }
             Some(_) => Ok(true), // Key exists and is not a string
-            None => Ok(false),   // Key does not exist
+            None => Ok(false), // Key does not exist
         }
     }
 
@@ -187,12 +178,8 @@ impl Storage {
                 .unwrap_or(false);
             if is_string {
                 let mut expiration_table = write_txn.open_table(EXPIRATION_TABLE)?;
-                let expires_at_ms: u128 = if ts_secs <= 0 {
-                    0
-                } else {
-                    (ts_secs as u128) * 1000
-                };
-                expiration_table.insert(key, &(expires_at_ms as u64))?;
+                let expires_at_ms: u128 = if ts_secs <= 0 { 0 } else { (ts_secs as u128) * 1000 };
+                expiration_table.insert(key, &((expires_at_ms as u64)))?;
                 applied = true;
             }
         }
@@ -214,7 +201,7 @@ impl Storage {
             if is_string {
                 let mut expiration_table = write_txn.open_table(EXPIRATION_TABLE)?;
                 let expires_at_ms: u128 = if ts_ms <= 0 { 0 } else { ts_ms as u128 };
-                expiration_table.insert(key, &(expires_at_ms as u64))?;
+                expiration_table.insert(key, &((expires_at_ms as u64)))?;
                 applied = true;
             }
         }
@@ -236,21 +223,21 @@ pub fn glob_match(pattern: &str, text: &str) -> bool {
     if pattern == "*" {
         return true;
     }
-
+    
     // Simple glob matching - supports * and ? wildcards
     let pattern_chars: Vec<char> = pattern.chars().collect();
     let text_chars: Vec<char> = text.chars().collect();
-
+    
     fn match_recursive(pattern: &[char], text: &[char], pi: usize, ti: usize) -> bool {
         if pi >= pattern.len() {
             return ti >= text.len();
         }
-
+        
         if ti >= text.len() {
             // Check if remaining pattern is all '*'
             return pattern[pi..].iter().all(|&c| c == '*');
         }
-
+        
         match pattern[pi] {
             '*' => {
                 // Try matching zero or more characters
@@ -275,7 +262,7 @@ pub fn glob_match(pattern: &str, text: &str) -> bool {
             }
         }
     }
-
+    
     match_recursive(&pattern_chars, &text_chars, 0, 0)
 }
 
@@ -296,4 +283,4 @@ mod tests {
         assert!(glob_match("*test*", "this_is_a_test_string"));
         assert!(!glob_match("*test*", "this_is_a_string"));
     }
-}
+}

src/storage/storage_hset.rs

@@ -1,50 +1,44 @@
-use super::*;
+use redb::{ReadableTable};
 use crate::error::DBError;
-use redb::ReadableTable;
+use super::*;
 
 impl Storage {
     // ✅ ENCRYPTION APPLIED: Values are encrypted before storage
     pub fn hset(&self, key: &str, pairs: Vec<(String, String)>) -> Result<i64, DBError> {
         let write_txn = self.db.begin_write()?;
         let mut new_fields = 0i64;
-
+        
         {
             let mut types_table = write_txn.open_table(TYPES_TABLE)?;
             let mut hashes_table = write_txn.open_table(HASHES_TABLE)?;
-
+            
             let key_type = {
                 let access_guard = types_table.get(key)?;
                 access_guard.map(|v| v.value().to_string())
             };
 
             match key_type.as_deref() {
-                Some("hash") | None => {
-                    // Proceed if hash or new key
+                Some("hash") | None => { // Proceed if hash or new key
                     // Set the type to hash (only if new key or existing hash)
                     types_table.insert(key, "hash")?;
-
+                    
                     for (field, value) in pairs {
                         // Check if field already exists
                         let exists = hashes_table.get((key, field.as_str()))?.is_some();
-
+                        
                         // Encrypt the value before storing
                         let encrypted = self.encrypt_if_needed(value.as_bytes())?;
                         hashes_table.insert((key, field.as_str()), encrypted.as_slice())?;
-
+                        
                         if !exists {
                             new_fields += 1;
                         }
                     }
                 }
-                Some(_) => {
-                    return Err(DBError(
-                        "WRONGTYPE Operation against a key holding the wrong kind of value"
-                            .to_string(),
-                    ))
-                }
+                Some(_) => return Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             }
         }
-
+        
         write_txn.commit()?;
         Ok(new_fields)
     }
@@ -53,7 +47,7 @@ impl Storage {
     pub fn hget(&self, key: &str, field: &str) -> Result<Option<String>, DBError> {
         let read_txn = self.db.begin_read()?;
         let types_table = read_txn.open_table(TYPES_TABLE)?;
-
+        
         let key_type = types_table.get(key)?.map(|v| v.value().to_string());
 
         match key_type.as_deref() {
@@ -68,9 +62,7 @@ impl Storage {
                     None => Ok(None),
                 }
             }
-            Some(_) => Err(DBError(
-                "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-            )),
+            Some(_) => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => Ok(None),
         }
     }
@@ -88,7 +80,7 @@ impl Storage {
             Some("hash") => {
                 let hashes_table = read_txn.open_table(HASHES_TABLE)?;
                 let mut result = Vec::new();
-
+                
                 let mut iter = hashes_table.iter()?;
                 while let Some(entry) = iter.next() {
                     let entry = entry?;
@@ -99,12 +91,10 @@ impl Storage {
                         result.push((field.to_string(), value));
                     }
                 }
-
+                
                 Ok(result)
             }
-            Some(_) => Err(DBError(
-                "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-            )),
+            Some(_) => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => Ok(Vec::new()),
         }
     }
@@ -112,24 +102,24 @@ impl Storage {
     pub fn hdel(&self, key: &str, fields: Vec<String>) -> Result<i64, DBError> {
         let write_txn = self.db.begin_write()?;
         let mut deleted = 0i64;
-
+        
         // First check if key exists and is a hash
         let key_type = {
             let types_table = write_txn.open_table(TYPES_TABLE)?;
             let access_guard = types_table.get(key)?;
             access_guard.map(|v| v.value().to_string())
         };
-
+        
         match key_type.as_deref() {
             Some("hash") => {
                 let mut hashes_table = write_txn.open_table(HASHES_TABLE)?;
-
+                
                 for field in fields {
                     if hashes_table.remove((key, field.as_str()))?.is_some() {
                         deleted += 1;
                     }
                 }
-
+                
                 // Check if hash is now empty and remove type if so
                 let mut has_fields = false;
                 let mut iter = hashes_table.iter()?;
@@ -142,20 +132,16 @@ impl Storage {
                     }
                 }
                 drop(iter);
-
+                
                 if !has_fields {
                     let mut types_table = write_txn.open_table(TYPES_TABLE)?;
                     types_table.remove(key)?;
                 }
             }
-            Some(_) => {
-                return Err(DBError(
-                    "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-                ))
-            }
+            Some(_) => return Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => {} // Key does not exist, nothing to delete, return 0 deleted
         }
-
+        
         write_txn.commit()?;
         Ok(deleted)
     }
@@ -173,9 +159,7 @@ impl Storage {
                 let hashes_table = read_txn.open_table(HASHES_TABLE)?;
                 Ok(hashes_table.get((key, field))?.is_some())
             }
-            Some(_) => Err(DBError(
-                "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-            )),
+            Some(_) => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => Ok(false),
         }
     }
@@ -192,7 +176,7 @@ impl Storage {
             Some("hash") => {
                 let hashes_table = read_txn.open_table(HASHES_TABLE)?;
                 let mut result = Vec::new();
-
+                
                 let mut iter = hashes_table.iter()?;
                 while let Some(entry) = iter.next() {
                     let entry = entry?;
@@ -201,12 +185,10 @@ impl Storage {
                         result.push(field.to_string());
                     }
                 }
-
+                
                 Ok(result)
             }
-            Some(_) => Err(DBError(
-                "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-            )),
+            Some(_) => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => Ok(Vec::new()),
         }
     }
@@ -224,7 +206,7 @@ impl Storage {
             Some("hash") => {
                 let hashes_table = read_txn.open_table(HASHES_TABLE)?;
                 let mut result = Vec::new();
-
+                
                 let mut iter = hashes_table.iter()?;
                 while let Some(entry) = iter.next() {
                     let entry = entry?;
@@ -235,12 +217,10 @@ impl Storage {
                         result.push(value);
                     }
                 }
-
+                
                 Ok(result)
             }
-            Some(_) => Err(DBError(
-                "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-            )),
+            Some(_) => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => Ok(Vec::new()),
         }
     }
@@ -257,7 +237,7 @@ impl Storage {
             Some("hash") => {
                 let hashes_table = read_txn.open_table(HASHES_TABLE)?;
                 let mut count = 0i64;
-
+                
                 let mut iter = hashes_table.iter()?;
                 while let Some(entry) = iter.next() {
                     let entry = entry?;
@@ -266,12 +246,10 @@ impl Storage {
                         count += 1;
                     }
                 }
-
+                
                 Ok(count)
             }
-            Some(_) => Err(DBError(
-                "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-            )),
+            Some(_) => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => Ok(0),
         }
     }
@@ -289,7 +267,7 @@ impl Storage {
             Some("hash") => {
                 let hashes_table = read_txn.open_table(HASHES_TABLE)?;
                 let mut result = Vec::new();
-
+                
                 for field in fields {
                     match hashes_table.get((key, field.as_str()))? {
                         Some(data) => {
@@ -300,12 +278,10 @@ impl Storage {
                         None => result.push(None),
                     }
                 }
-
+                
                 Ok(result)
             }
-            Some(_) => Err(DBError(
-                "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-            )),
+            Some(_) => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => Ok(fields.into_iter().map(|_| None).collect()),
         }
     }
@@ -314,51 +290,39 @@ impl Storage {
     pub fn hsetnx(&self, key: &str, field: &str, value: &str) -> Result<bool, DBError> {
         let write_txn = self.db.begin_write()?;
         let mut result = false;
-
+        
         {
             let mut types_table = write_txn.open_table(TYPES_TABLE)?;
             let mut hashes_table = write_txn.open_table(HASHES_TABLE)?;
-
+            
             let key_type = {
                 let access_guard = types_table.get(key)?;
                 access_guard.map(|v| v.value().to_string())
             };
 
             match key_type.as_deref() {
-                Some("hash") | None => {
-                    // Proceed if hash or new key
+                Some("hash") | None => { // Proceed if hash or new key
                     // Check if field already exists
                     if hashes_table.get((key, field))?.is_none() {
                         // Set the type to hash (only if new key or existing hash)
                         types_table.insert(key, "hash")?;
-
+                        
                         // Encrypt the value before storing
                         let encrypted = self.encrypt_if_needed(value.as_bytes())?;
                         hashes_table.insert((key, field), encrypted.as_slice())?;
                         result = true;
                     }
                 }
-                Some(_) => {
-                    return Err(DBError(
-                        "WRONGTYPE Operation against a key holding the wrong kind of value"
-                            .to_string(),
-                    ))
-                }
+                Some(_) => return Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             }
         }
-
+        
         write_txn.commit()?;
         Ok(result)
     }
 
     // ✅ ENCRYPTION APPLIED: Values are decrypted after retrieval
-    pub fn hscan(
-        &self,
-        key: &str,
-        cursor: u64,
-        pattern: Option<&str>,
-        count: Option<u64>,
-    ) -> Result<(u64, Vec<(String, String)>), DBError> {
+    pub fn hscan(&self, key: &str, cursor: u64, pattern: Option<&str>, count: Option<u64>) -> Result<(u64, Vec<(String, String)>), DBError> {
         let read_txn = self.db.begin_read()?;
         let types_table = read_txn.open_table(TYPES_TABLE)?;
         let key_type = {
@@ -372,28 +336,28 @@ impl Storage {
                 let mut result = Vec::new();
                 let mut current_cursor = 0u64;
                 let limit = count.unwrap_or(10) as usize;
-
+                
                 let mut iter = hashes_table.iter()?;
                 while let Some(entry) = iter.next() {
                     let entry = entry?;
                     let (hash_key, field) = entry.0.value();
-
+                    
                     if hash_key == key {
                         if current_cursor >= cursor {
                             let field_str = field.to_string();
-
+                            
                             // Apply pattern matching if specified
                             let matches = if let Some(pat) = pattern {
                                 super::storage_extra::glob_match(pat, &field_str)
                             } else {
                                 true
                             };
-
+                            
                             if matches {
                                 let decrypted = self.decrypt_if_needed(entry.1.value())?;
                                 let value = String::from_utf8(decrypted)?;
                                 result.push((field_str, value));
-
+                                
                                 if result.len() >= limit {
                                     break;
                                 }
@@ -402,18 +366,12 @@ impl Storage {
                         current_cursor += 1;
                     }
                 }
-
-                let next_cursor = if result.len() < limit {
-                    0
-                } else {
-                    current_cursor
-                };
+                
+                let next_cursor = if result.len() < limit { 0 } else { current_cursor };
                 Ok((next_cursor, result))
             }
-            Some(_) => Err(DBError(
-                "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-            )),
+            Some(_) => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
             None => Ok((0, Vec::new())),
         }
     }
-}
+}

src/storage/storage_lists.rs

@@ -1,20 +1,20 @@
-use super::*;
+use redb::{ReadableTable};
 use crate::error::DBError;
-use redb::ReadableTable;
+use super::*;
 
 impl Storage {
     // ✅ ENCRYPTION APPLIED: Elements are encrypted before storage
     pub fn lpush(&self, key: &str, elements: Vec<String>) -> Result<i64, DBError> {
         let write_txn = self.db.begin_write()?;
         let mut _length = 0i64;
-
+        
         {
             let mut types_table = write_txn.open_table(TYPES_TABLE)?;
             let mut lists_table = write_txn.open_table(LISTS_TABLE)?;
-
+            
             // Set the type to list
             types_table.insert(key, "list")?;
-
+            
             // Get current list or create empty one
             let mut list: Vec<String> = match lists_table.get(key)? {
                 Some(data) => {
@@ -23,20 +23,20 @@ impl Storage {
                 }
                 None => Vec::new(),
             };
-
+            
             // Add elements to the front (left)
             for element in elements.into_iter() {
                 list.insert(0, element);
             }
-
+            
             _length = list.len() as i64;
-
+            
             // Encrypt and store the updated list
             let serialized = serde_json::to_vec(&list)?;
             let encrypted = self.encrypt_if_needed(&serialized)?;
             lists_table.insert(key, encrypted.as_slice())?;
         }
-
+        
         write_txn.commit()?;
         Ok(_length)
     }
@@ -45,14 +45,14 @@ impl Storage {
     pub fn rpush(&self, key: &str, elements: Vec<String>) -> Result<i64, DBError> {
         let write_txn = self.db.begin_write()?;
         let mut _length = 0i64;
-
+        
         {
             let mut types_table = write_txn.open_table(TYPES_TABLE)?;
             let mut lists_table = write_txn.open_table(LISTS_TABLE)?;
-
+            
             // Set the type to list
             types_table.insert(key, "list")?;
-
+            
             // Get current list or create empty one
             let mut list: Vec<String> = match lists_table.get(key)? {
                 Some(data) => {
@@ -61,17 +61,17 @@ impl Storage {
                 }
                 None => Vec::new(),
             };
-
+            
             // Add elements to the end (right)
             list.extend(elements);
             _length = list.len() as i64;
-
+            
             // Encrypt and store the updated list
             let serialized = serde_json::to_vec(&list)?;
             let encrypted = self.encrypt_if_needed(&serialized)?;
             lists_table.insert(key, encrypted.as_slice())?;
         }
-
+        
         write_txn.commit()?;
         Ok(_length)
     }
@@ -80,12 +80,12 @@ impl Storage {
     pub fn lpop(&self, key: &str, count: u64) -> Result<Vec<String>, DBError> {
         let write_txn = self.db.begin_write()?;
         let mut result = Vec::new();
-
+        
         // First check if key exists and is a list, and get the data
         let list_data = {
             let types_table = write_txn.open_table(TYPES_TABLE)?;
             let lists_table = write_txn.open_table(LISTS_TABLE)?;
-
+            
             let result = match types_table.get(key)? {
                 Some(type_val) if type_val.value() == "list" => {
                     if let Some(data) = lists_table.get(key)? {
@@ -100,7 +100,7 @@ impl Storage {
             };
             result
         };
-
+        
         if let Some(mut list) = list_data {
             let pop_count = std::cmp::min(count as usize, list.len());
             for _ in 0..pop_count {
@@ -108,7 +108,7 @@ impl Storage {
                     result.push(list.remove(0));
                 }
             }
-
+            
             let mut lists_table = write_txn.open_table(LISTS_TABLE)?;
             if list.is_empty() {
                 // Remove the key if list is empty
@@ -122,7 +122,7 @@ impl Storage {
                 lists_table.insert(key, encrypted.as_slice())?;
             }
         }
-
+        
         write_txn.commit()?;
         Ok(result)
     }
@@ -131,12 +131,12 @@ impl Storage {
     pub fn rpop(&self, key: &str, count: u64) -> Result<Vec<String>, DBError> {
         let write_txn = self.db.begin_write()?;
         let mut result = Vec::new();
-
+        
         // First check if key exists and is a list, and get the data
         let list_data = {
             let types_table = write_txn.open_table(TYPES_TABLE)?;
             let lists_table = write_txn.open_table(LISTS_TABLE)?;
-
+            
             let result = match types_table.get(key)? {
                 Some(type_val) if type_val.value() == "list" => {
                     if let Some(data) = lists_table.get(key)? {
@@ -151,7 +151,7 @@ impl Storage {
             };
             result
         };
-
+        
         if let Some(mut list) = list_data {
             let pop_count = std::cmp::min(count as usize, list.len());
             for _ in 0..pop_count {
@@ -159,7 +159,7 @@ impl Storage {
                     result.push(list.pop().unwrap());
                 }
             }
-
+            
             let mut lists_table = write_txn.open_table(LISTS_TABLE)?;
             if list.is_empty() {
                 // Remove the key if list is empty
@@ -173,7 +173,7 @@ impl Storage {
                 lists_table.insert(key, encrypted.as_slice())?;
             }
         }
-
+        
         write_txn.commit()?;
         Ok(result)
     }
@@ -181,7 +181,7 @@ impl Storage {
     pub fn llen(&self, key: &str) -> Result<i64, DBError> {
         let read_txn = self.db.begin_read()?;
         let types_table = read_txn.open_table(TYPES_TABLE)?;
-
+        
         match types_table.get(key)? {
             Some(type_val) if type_val.value() == "list" => {
                 let lists_table = read_txn.open_table(LISTS_TABLE)?;
@@ -202,7 +202,7 @@ impl Storage {
     pub fn lindex(&self, key: &str, index: i64) -> Result<Option<String>, DBError> {
         let read_txn = self.db.begin_read()?;
         let types_table = read_txn.open_table(TYPES_TABLE)?;
-
+        
         match types_table.get(key)? {
             Some(type_val) if type_val.value() == "list" => {
                 let lists_table = read_txn.open_table(LISTS_TABLE)?;
@@ -210,13 +210,13 @@ impl Storage {
                     Some(data) => {
                         let decrypted = self.decrypt_if_needed(data.value())?;
                         let list: Vec<String> = serde_json::from_slice(&decrypted)?;
-
+                        
                         let actual_index = if index < 0 {
                             list.len() as i64 + index
                         } else {
                             index
                         };
-
+                        
                         if actual_index >= 0 && (actual_index as usize) < list.len() {
                             Ok(Some(list[actual_index as usize].clone()))
                         } else {
@@ -234,7 +234,7 @@ impl Storage {
     pub fn lrange(&self, key: &str, start: i64, stop: i64) -> Result<Vec<String>, DBError> {
         let read_txn = self.db.begin_read()?;
         let types_table = read_txn.open_table(TYPES_TABLE)?;
-
+        
         match types_table.get(key)? {
             Some(type_val) if type_val.value() == "list" => {
                 let lists_table = read_txn.open_table(LISTS_TABLE)?;
@@ -242,30 +242,22 @@ impl Storage {
                     Some(data) => {
                         let decrypted = self.decrypt_if_needed(data.value())?;
                         let list: Vec<String> = serde_json::from_slice(&decrypted)?;
-
+                        
                         if list.is_empty() {
                             return Ok(Vec::new());
                         }
-
+                        
                         let len = list.len() as i64;
-                        let start_idx = if start < 0 {
-                            std::cmp::max(0, len + start)
-                        } else {
-                            std::cmp::min(start, len)
-                        };
-                        let stop_idx = if stop < 0 {
-                            std::cmp::max(-1, len + stop)
-                        } else {
-                            std::cmp::min(stop, len - 1)
-                        };
-
+                        let start_idx = if start < 0 { std::cmp::max(0, len + start) } else { std::cmp::min(start, len) };
+                        let stop_idx = if stop < 0 { std::cmp::max(-1, len + stop) } else { std::cmp::min(stop, len - 1) };
+                        
                         if start_idx > stop_idx || start_idx >= len {
                             return Ok(Vec::new());
                         }
-
+                        
                         let start_usize = start_idx as usize;
                         let stop_usize = (stop_idx + 1) as usize;
-
+                        
                         Ok(list[start_usize..std::cmp::min(stop_usize, list.len())].to_vec())
                     }
                     None => Ok(Vec::new()),
@@ -278,12 +270,12 @@ impl Storage {
     // ✅ ENCRYPTION APPLIED: Elements are decrypted after retrieval and encrypted before storage
     pub fn ltrim(&self, key: &str, start: i64, stop: i64) -> Result<(), DBError> {
         let write_txn = self.db.begin_write()?;
-
+        
         // First check if key exists and is a list, and get the data
         let list_data = {
             let types_table = write_txn.open_table(TYPES_TABLE)?;
             let lists_table = write_txn.open_table(LISTS_TABLE)?;
-
+            
             let result = match types_table.get(key)? {
                 Some(type_val) if type_val.value() == "list" => {
                     if let Some(data) = lists_table.get(key)? {
@@ -298,25 +290,17 @@ impl Storage {
             };
             result
         };
-
+        
         if let Some(list) = list_data {
             if list.is_empty() {
                 write_txn.commit()?;
                 return Ok(());
             }
-
+            
             let len = list.len() as i64;
-            let start_idx = if start < 0 {
-                std::cmp::max(0, len + start)
-            } else {
-                std::cmp::min(start, len)
-            };
-            let stop_idx = if stop < 0 {
-                std::cmp::max(-1, len + stop)
-            } else {
-                std::cmp::min(stop, len - 1)
-            };
-
+            let start_idx = if start < 0 { std::cmp::max(0, len + start) } else { std::cmp::min(start, len) };
+            let stop_idx = if stop < 0 { std::cmp::max(-1, len + stop) } else { std::cmp::min(stop, len - 1) };
+            
             let mut lists_table = write_txn.open_table(LISTS_TABLE)?;
             if start_idx > stop_idx || start_idx >= len {
                 // Remove the entire list
@@ -327,7 +311,7 @@ impl Storage {
                 let start_usize = start_idx as usize;
                 let stop_usize = (stop_idx + 1) as usize;
                 let trimmed = list[start_usize..std::cmp::min(stop_usize, list.len())].to_vec();
-
+                
                 if trimmed.is_empty() {
                     lists_table.remove(key)?;
                     let mut types_table = write_txn.open_table(TYPES_TABLE)?;
@@ -340,7 +324,7 @@ impl Storage {
                 }
             }
         }
-
+        
         write_txn.commit()?;
         Ok(())
     }
@@ -349,12 +333,12 @@ impl Storage {
     pub fn lrem(&self, key: &str, count: i64, element: &str) -> Result<i64, DBError> {
         let write_txn = self.db.begin_write()?;
         let mut removed = 0i64;
-
+        
         // First check if key exists and is a list, and get the data
         let list_data = {
             let types_table = write_txn.open_table(TYPES_TABLE)?;
             let lists_table = write_txn.open_table(LISTS_TABLE)?;
-
+            
             let result = match types_table.get(key)? {
                 Some(type_val) if type_val.value() == "list" => {
                     if let Some(data) = lists_table.get(key)? {
@@ -369,7 +353,7 @@ impl Storage {
             };
             result
         };
-
+        
         if let Some(mut list) = list_data {
             if count == 0 {
                 // Remove all occurrences
@@ -399,7 +383,7 @@ impl Storage {
                     }
                 }
             }
-
+            
             let mut lists_table = write_txn.open_table(LISTS_TABLE)?;
             if list.is_empty() {
                 lists_table.remove(key)?;
@@ -412,8 +396,8 @@ impl Storage {
                 lists_table.insert(key, encrypted.as_slice())?;
             }
         }
-
+        
         write_txn.commit()?;
         Ok(removed)
     }
-}
+}

src/storage_sled/mod.rs

@@ -1,12 +1,12 @@
 // src/storage_sled/mod.rs
-use crate::crypto::CryptoFactory;
-use crate::error::DBError;
-use crate::storage_trait::StorageBackend;
-use serde::{Deserialize, Serialize};
-use std::collections::HashMap;
 use std::path::Path;
 use std::sync::Arc;
+use std::collections::HashMap;
 use std::time::{SystemTime, UNIX_EPOCH};
+use serde::{Deserialize, Serialize};
+use crate::error::DBError;
+use crate::storage_trait::StorageBackend;
+use crate::crypto::CryptoFactory;
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 enum ValueType {
@@ -28,56 +28,44 @@ pub struct SledStorage {
 }
 
 impl SledStorage {
-    pub fn new(
-        path: impl AsRef<Path>,
-        should_encrypt: bool,
-        master_key: Option<&str>,
-    ) -> Result<Self, DBError> {
+    pub fn new(path: impl AsRef<Path>, should_encrypt: bool, master_key: Option<&str>) -> Result<Self, DBError> {
         let db = sled::open(path).map_err(|e| DBError(format!("Failed to open sled: {}", e)))?;
-        let types = db
-            .open_tree("types")
-            .map_err(|e| DBError(format!("Failed to open types tree: {}", e)))?;
-
+        let types = db.open_tree("types").map_err(|e| DBError(format!("Failed to open types tree: {}", e)))?;
+        
         // Check if database was previously encrypted
-        let encrypted_tree = db
-            .open_tree("encrypted")
-            .map_err(|e| DBError(e.to_string()))?;
-        let was_encrypted = encrypted_tree
-            .get("encrypted")
+        let encrypted_tree = db.open_tree("encrypted").map_err(|e| DBError(e.to_string()))?;
+        let was_encrypted = encrypted_tree.get("encrypted")
             .map_err(|e| DBError(e.to_string()))?
             .map(|v| v[0] == 1)
             .unwrap_or(false);
-
+        
         let crypto = if should_encrypt || was_encrypted {
             if let Some(key) = master_key {
                 Some(CryptoFactory::new(key.as_bytes()))
             } else {
-                return Err(DBError(
-                    "Encryption requested but no master key provided".to_string(),
-                ));
+                return Err(DBError("Encryption requested but no master key provided".to_string()));
             }
         } else {
             None
         };
-
+        
         // Mark database as encrypted if enabling encryption
         if should_encrypt && !was_encrypted {
-            encrypted_tree
-                .insert("encrypted", &[1u8])
+            encrypted_tree.insert("encrypted", &[1u8])
                 .map_err(|e| DBError(e.to_string()))?;
             encrypted_tree.flush().map_err(|e| DBError(e.to_string()))?;
         }
-
+        
         Ok(SledStorage { db, types, crypto })
     }
-
+    
     fn now_millis() -> u128 {
         SystemTime::now()
             .duration_since(UNIX_EPOCH)
             .unwrap()
             .as_millis()
     }
-
+    
     fn encrypt_if_needed(&self, data: &[u8]) -> Result<Vec<u8>, DBError> {
         if let Some(crypto) = &self.crypto {
             Ok(crypto.encrypt(data))
@@ -85,7 +73,7 @@ impl SledStorage {
             Ok(data.to_vec())
         }
     }
-
+    
     fn decrypt_if_needed(&self, data: &[u8]) -> Result<Vec<u8>, DBError> {
         if let Some(crypto) = &self.crypto {
             Ok(crypto.decrypt(data)?)
@@ -93,14 +81,14 @@ impl SledStorage {
             Ok(data.to_vec())
         }
     }
-
+    
     fn get_storage_value(&self, key: &str) -> Result<Option<StorageValue>, DBError> {
         match self.db.get(key).map_err(|e| DBError(e.to_string()))? {
             Some(encrypted_data) => {
                 let decrypted = self.decrypt_if_needed(&encrypted_data)?;
                 let storage_val: StorageValue = bincode::deserialize(&decrypted)
                     .map_err(|e| DBError(format!("Deserialization error: {}", e)))?;
-
+                
                 // Check expiration
                 if let Some(expires_at) = storage_val.expires_at {
                     if Self::now_millis() > expires_at {
@@ -110,51 +98,47 @@ impl SledStorage {
                         return Ok(None);
                     }
                 }
-
+                
                 Ok(Some(storage_val))
             }
-            None => Ok(None),
+            None => Ok(None)
         }
     }
-
+    
     fn set_storage_value(&self, key: &str, storage_val: StorageValue) -> Result<(), DBError> {
         let data = bincode::serialize(&storage_val)
             .map_err(|e| DBError(format!("Serialization error: {}", e)))?;
         let encrypted = self.encrypt_if_needed(&data)?;
-        self.db
-            .insert(key, encrypted)
-            .map_err(|e| DBError(e.to_string()))?;
-
+        self.db.insert(key, encrypted).map_err(|e| DBError(e.to_string()))?;
+        
         // Store type info (unencrypted for efficiency)
         let type_str = match &storage_val.value {
             ValueType::String(_) => "string",
             ValueType::Hash(_) => "hash",
             ValueType::List(_) => "list",
         };
-        self.types
-            .insert(key, type_str.as_bytes())
-            .map_err(|e| DBError(e.to_string()))?;
-
+        self.types.insert(key, type_str.as_bytes()).map_err(|e| DBError(e.to_string()))?;
+        
         Ok(())
     }
-
+    
     fn glob_match(pattern: &str, text: &str) -> bool {
         if pattern == "*" {
             return true;
         }
-
+        
         let pattern_chars: Vec<char> = pattern.chars().collect();
         let text_chars: Vec<char> = text.chars().collect();
-
+        
         fn match_recursive(pattern: &[char], text: &[char], pi: usize, ti: usize) -> bool {
             if pi >= pattern.len() {
                 return ti >= text.len();
             }
-
+            
             if ti >= text.len() {
                 return pattern[pi..].iter().all(|&c| c == '*');
             }
-
+            
             match pattern[pi] {
                 '*' => {
                     for i in ti..=text.len() {
@@ -174,7 +158,7 @@ impl SledStorage {
                 }
             }
         }
-
+        
         match_recursive(&pattern_chars, &text_chars, 0, 0)
     }
 }
@@ -184,12 +168,12 @@ impl StorageBackend for SledStorage {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::String(s) => Ok(Some(s)),
-                _ => Ok(None),
-            },
-            None => Ok(None),
+                _ => Ok(None)
+            }
+            None => Ok(None)
         }
     }
-
+    
     fn set(&self, key: String, value: String) -> Result<(), DBError> {
         let storage_val = StorageValue {
             value: ValueType::String(value),
@@ -199,7 +183,7 @@ impl StorageBackend for SledStorage {
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(())
     }
-
+    
     fn setx(&self, key: String, value: String, expire_ms: u128) -> Result<(), DBError> {
         let storage_val = StorageValue {
             value: ValueType::String(value),
@@ -209,27 +193,25 @@ impl StorageBackend for SledStorage {
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(())
     }
-
+    
     fn del(&self, key: String) -> Result<(), DBError> {
         self.db.remove(&key).map_err(|e| DBError(e.to_string()))?;
-        self.types
-            .remove(&key)
-            .map_err(|e| DBError(e.to_string()))?;
+        self.types.remove(&key).map_err(|e| DBError(e.to_string()))?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(())
     }
-
+    
     fn exists(&self, key: &str) -> Result<bool, DBError> {
         // Check with expiration
         Ok(self.get_storage_value(key)?.is_some())
     }
-
+    
     fn keys(&self, pattern: &str) -> Result<Vec<String>, DBError> {
         let mut keys = Vec::new();
         for item in self.types.iter() {
             let (key_bytes, _) = item.map_err(|e| DBError(e.to_string()))?;
             let key = String::from_utf8_lossy(&key_bytes).to_string();
-
+            
             // Check if key is expired
             if self.get_storage_value(&key)?.is_some() {
                 if Self::glob_match(pattern, &key) {
@@ -239,29 +221,24 @@ impl StorageBackend for SledStorage {
         }
         Ok(keys)
     }
-
-    fn scan(
-        &self,
-        cursor: u64,
-        pattern: Option<&str>,
-        count: Option<u64>,
-    ) -> Result<(u64, Vec<(String, String)>), DBError> {
+    
+    fn scan(&self, cursor: u64, pattern: Option<&str>, count: Option<u64>) -> Result<(u64, Vec<(String, String)>), DBError> {
         let mut result = Vec::new();
         let mut current_cursor = 0u64;
         let limit = count.unwrap_or(10) as usize;
-
+        
         for item in self.types.iter() {
             if current_cursor >= cursor {
                 let (key_bytes, type_bytes) = item.map_err(|e| DBError(e.to_string()))?;
                 let key = String::from_utf8_lossy(&key_bytes).to_string();
-
+                
                 // Check pattern match
                 let matches = if let Some(pat) = pattern {
                     Self::glob_match(pat, &key)
                 } else {
                     true
                 };
-
+                
                 if matches {
                     // Check if key is expired and get value
                     if let Some(storage_val) = self.get_storage_value(&key)? {
@@ -270,7 +247,7 @@ impl StorageBackend for SledStorage {
                             _ => String::from_utf8_lossy(&type_bytes).to_string(),
                         };
                         result.push((key, value));
-
+                        
                         if result.len() >= limit {
                             current_cursor += 1;
                             break;
@@ -280,15 +257,11 @@ impl StorageBackend for SledStorage {
             }
             current_cursor += 1;
         }
-
-        let next_cursor = if result.len() < limit {
-            0
-        } else {
-            current_cursor
-        };
+        
+        let next_cursor = if result.len() < limit { 0 } else { current_cursor };
         Ok((next_cursor, result))
     }
-
+    
     fn dbsize(&self) -> Result<i64, DBError> {
         let mut count = 0i64;
         for item in self.types.iter() {
@@ -300,42 +273,38 @@ impl StorageBackend for SledStorage {
         }
         Ok(count)
     }
-
+    
     fn flushdb(&self) -> Result<(), DBError> {
         self.db.clear().map_err(|e| DBError(e.to_string()))?;
         self.types.clear().map_err(|e| DBError(e.to_string()))?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(())
     }
-
+    
     fn get_key_type(&self, key: &str) -> Result<Option<String>, DBError> {
         // First check if key exists (handles expiration)
         if self.get_storage_value(key)?.is_some() {
             match self.types.get(key).map_err(|e| DBError(e.to_string()))? {
                 Some(data) => Ok(Some(String::from_utf8_lossy(&data).to_string())),
-                None => Ok(None),
+                None => Ok(None)
             }
         } else {
             Ok(None)
         }
     }
-
+    
     // Hash operations
     fn hset(&self, key: &str, pairs: Vec<(String, String)>) -> Result<i64, DBError> {
         let mut storage_val = self.get_storage_value(key)?.unwrap_or(StorageValue {
             value: ValueType::Hash(HashMap::new()),
             expires_at: None,
         });
-
+        
         let hash = match &mut storage_val.value {
             ValueType::Hash(h) => h,
-            _ => {
-                return Err(DBError(
-                    "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-                ))
-            }
+            _ => return Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
         };
-
+        
         let mut new_fields = 0i64;
         for (field, value) in pairs {
             if !hash.contains_key(&field) {
@@ -343,46 +312,40 @@ impl StorageBackend for SledStorage {
             }
             hash.insert(field, value);
         }
-
+        
         self.set_storage_value(key, storage_val)?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(new_fields)
     }
-
+    
     fn hget(&self, key: &str, field: &str) -> Result<Option<String>, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::Hash(h) => Ok(h.get(field).cloned()),
-                _ => Ok(None),
-            },
-            None => Ok(None),
+                _ => Ok(None)
+            }
+            None => Ok(None)
         }
     }
-
+    
     fn hgetall(&self, key: &str) -> Result<Vec<(String, String)>, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::Hash(h) => Ok(h.into_iter().collect()),
-                _ => Ok(Vec::new()),
-            },
-            None => Ok(Vec::new()),
+                _ => Ok(Vec::new())
+            }
+            None => Ok(Vec::new())
         }
     }
-
-    fn hscan(
-        &self,
-        key: &str,
-        cursor: u64,
-        pattern: Option<&str>,
-        count: Option<u64>,
-    ) -> Result<(u64, Vec<(String, String)>), DBError> {
+    
+    fn hscan(&self, key: &str, cursor: u64, pattern: Option<&str>, count: Option<u64>) -> Result<(u64, Vec<(String, String)>), DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::Hash(h) => {
                     let mut result = Vec::new();
                     let mut current_cursor = 0u64;
                     let limit = count.unwrap_or(10) as usize;
-
+                    
                     for (field, value) in h.iter() {
                         if current_cursor >= cursor {
                             let matches = if let Some(pat) = pattern {
@@ -390,7 +353,7 @@ impl StorageBackend for SledStorage {
                             } else {
                                 true
                             };
-
+                            
                             if matches {
                                 result.push((field.clone(), value.clone()));
                                 if result.len() >= limit {
@@ -401,115 +364,107 @@ impl StorageBackend for SledStorage {
                         }
                         current_cursor += 1;
                     }
-
-                    let next_cursor = if result.len() < limit {
-                        0
-                    } else {
-                        current_cursor
-                    };
+                    
+                    let next_cursor = if result.len() < limit { 0 } else { current_cursor };
                     Ok((next_cursor, result))
                 }
-                _ => Err(DBError(
-                    "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-                )),
-            },
-            None => Ok((0, Vec::new())),
+                _ => Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string()))
+            }
+            None => Ok((0, Vec::new()))
         }
     }
-
+    
     fn hdel(&self, key: &str, fields: Vec<String>) -> Result<i64, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(0),
+            None => return Ok(0)
         };
-
+        
         let hash = match &mut storage_val.value {
             ValueType::Hash(h) => h,
-            _ => return Ok(0),
+            _ => return Ok(0)
         };
-
+        
         let mut deleted = 0i64;
         for field in fields {
             if hash.remove(&field).is_some() {
                 deleted += 1;
             }
         }
-
+        
         if hash.is_empty() {
             self.del(key.to_string())?;
         } else {
             self.set_storage_value(key, storage_val)?;
             self.db.flush().map_err(|e| DBError(e.to_string()))?;
         }
-
+        
         Ok(deleted)
     }
-
+    
     fn hexists(&self, key: &str, field: &str) -> Result<bool, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::Hash(h) => Ok(h.contains_key(field)),
-                _ => Ok(false),
-            },
-            None => Ok(false),
+                _ => Ok(false)
+            }
+            None => Ok(false)
         }
     }
-
+    
     fn hkeys(&self, key: &str) -> Result<Vec<String>, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::Hash(h) => Ok(h.keys().cloned().collect()),
-                _ => Ok(Vec::new()),
-            },
-            None => Ok(Vec::new()),
+                _ => Ok(Vec::new())
+            }
+            None => Ok(Vec::new())
         }
     }
-
+    
     fn hvals(&self, key: &str) -> Result<Vec<String>, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::Hash(h) => Ok(h.values().cloned().collect()),
-                _ => Ok(Vec::new()),
-            },
-            None => Ok(Vec::new()),
+                _ => Ok(Vec::new())
+            }
+            None => Ok(Vec::new())
         }
     }
-
+    
     fn hlen(&self, key: &str) -> Result<i64, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::Hash(h) => Ok(h.len() as i64),
-                _ => Ok(0),
-            },
-            None => Ok(0),
+                _ => Ok(0)
+            }
+            None => Ok(0)
         }
     }
-
+    
     fn hmget(&self, key: &str, fields: Vec<String>) -> Result<Vec<Option<String>>, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
-                ValueType::Hash(h) => Ok(fields.into_iter().map(|f| h.get(&f).cloned()).collect()),
-                _ => Ok(fields.into_iter().map(|_| None).collect()),
-            },
-            None => Ok(fields.into_iter().map(|_| None).collect()),
+                ValueType::Hash(h) => {
+                    Ok(fields.into_iter().map(|f| h.get(&f).cloned()).collect())
+                }
+                _ => Ok(fields.into_iter().map(|_| None).collect())
+            }
+            None => Ok(fields.into_iter().map(|_| None).collect())
         }
     }
-
+    
     fn hsetnx(&self, key: &str, field: &str, value: &str) -> Result<bool, DBError> {
         let mut storage_val = self.get_storage_value(key)?.unwrap_or(StorageValue {
             value: ValueType::Hash(HashMap::new()),
             expires_at: None,
         });
-
+        
         let hash = match &mut storage_val.value {
             ValueType::Hash(h) => h,
-            _ => {
-                return Err(DBError(
-                    "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-                ))
-            }
+            _ => return Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
         };
-
+        
         if hash.contains_key(field) {
             Ok(false)
         } else {
@@ -519,66 +474,58 @@ impl StorageBackend for SledStorage {
             Ok(true)
         }
     }
-
+    
     // List operations
     fn lpush(&self, key: &str, elements: Vec<String>) -> Result<i64, DBError> {
         let mut storage_val = self.get_storage_value(key)?.unwrap_or(StorageValue {
             value: ValueType::List(Vec::new()),
             expires_at: None,
         });
-
+        
         let list = match &mut storage_val.value {
             ValueType::List(l) => l,
-            _ => {
-                return Err(DBError(
-                    "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-                ))
-            }
+            _ => return Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
         };
-
+        
         for element in elements.into_iter().rev() {
             list.insert(0, element);
         }
-
+        
         let len = list.len() as i64;
         self.set_storage_value(key, storage_val)?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(len)
     }
-
+    
     fn rpush(&self, key: &str, elements: Vec<String>) -> Result<i64, DBError> {
         let mut storage_val = self.get_storage_value(key)?.unwrap_or(StorageValue {
             value: ValueType::List(Vec::new()),
             expires_at: None,
         });
-
+        
         let list = match &mut storage_val.value {
             ValueType::List(l) => l,
-            _ => {
-                return Err(DBError(
-                    "WRONGTYPE Operation against a key holding the wrong kind of value".to_string(),
-                ))
-            }
+            _ => return Err(DBError("WRONGTYPE Operation against a key holding the wrong kind of value".to_string())),
         };
-
+        
         list.extend(elements);
         let len = list.len() as i64;
         self.set_storage_value(key, storage_val)?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(len)
     }
-
+    
     fn lpop(&self, key: &str, count: u64) -> Result<Vec<String>, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(Vec::new()),
+            None => return Ok(Vec::new())
         };
-
+        
         let list = match &mut storage_val.value {
             ValueType::List(l) => l,
-            _ => return Ok(Vec::new()),
+            _ => return Ok(Vec::new())
         };
-
+        
         let mut result = Vec::new();
         for _ in 0..count.min(list.len() as u64) {
             if let Some(elem) = list.first() {
@@ -586,55 +533,55 @@ impl StorageBackend for SledStorage {
                 list.remove(0);
             }
         }
-
+        
         if list.is_empty() {
             self.del(key.to_string())?;
         } else {
             self.set_storage_value(key, storage_val)?;
             self.db.flush().map_err(|e| DBError(e.to_string()))?;
         }
-
+        
         Ok(result)
     }
-
+    
     fn rpop(&self, key: &str, count: u64) -> Result<Vec<String>, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(Vec::new()),
+            None => return Ok(Vec::new())
         };
-
+        
         let list = match &mut storage_val.value {
             ValueType::List(l) => l,
-            _ => return Ok(Vec::new()),
+            _ => return Ok(Vec::new())
         };
-
+        
         let mut result = Vec::new();
         for _ in 0..count.min(list.len() as u64) {
             if let Some(elem) = list.pop() {
                 result.push(elem);
             }
         }
-
+        
         if list.is_empty() {
             self.del(key.to_string())?;
         } else {
             self.set_storage_value(key, storage_val)?;
             self.db.flush().map_err(|e| DBError(e.to_string()))?;
         }
-
+        
         Ok(result)
     }
-
+    
     fn llen(&self, key: &str) -> Result<i64, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
                 ValueType::List(l) => Ok(l.len() as i64),
-                _ => Ok(0),
-            },
-            None => Ok(0),
+                _ => Ok(0)
+            }
+            None => Ok(0)
         }
     }
-
+    
     fn lindex(&self, key: &str, index: i64) -> Result<Option<String>, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
@@ -644,19 +591,19 @@ impl StorageBackend for SledStorage {
                     } else {
                         index
                     };
-
+                    
                     if actual_index >= 0 && (actual_index as usize) < list.len() {
                         Ok(Some(list[actual_index as usize].clone()))
                     } else {
                         Ok(None)
                     }
                 }
-                _ => Ok(None),
-            },
-            None => Ok(None),
+                _ => Ok(None)
+            }
+            None => Ok(None)
         }
     }
-
+    
     fn lrange(&self, key: &str, start: i64, stop: i64) -> Result<Vec<String>, DBError> {
         match self.get_storage_value(key)? {
             Some(storage_val) => match storage_val.value {
@@ -664,68 +611,68 @@ impl StorageBackend for SledStorage {
                     if list.is_empty() {
                         return Ok(Vec::new());
                     }
-
+                    
                     let len = list.len() as i64;
-                    let start_idx = if start < 0 {
-                        std::cmp::max(0, len + start)
-                    } else {
-                        std::cmp::min(start, len)
+                    let start_idx = if start < 0 { 
+                        std::cmp::max(0, len + start) 
+                    } else { 
+                        std::cmp::min(start, len) 
                     };
-                    let stop_idx = if stop < 0 {
-                        std::cmp::max(-1, len + stop)
-                    } else {
-                        std::cmp::min(stop, len - 1)
+                    let stop_idx = if stop < 0 { 
+                        std::cmp::max(-1, len + stop) 
+                    } else { 
+                        std::cmp::min(stop, len - 1) 
                     };
-
+                    
                     if start_idx > stop_idx || start_idx >= len {
                         return Ok(Vec::new());
                     }
-
+                    
                     let start_usize = start_idx as usize;
                     let stop_usize = (stop_idx + 1) as usize;
-
+                    
                     Ok(list[start_usize..std::cmp::min(stop_usize, list.len())].to_vec())
                 }
-                _ => Ok(Vec::new()),
-            },
-            None => Ok(Vec::new()),
+                _ => Ok(Vec::new())
+            }
+            None => Ok(Vec::new())
         }
     }
-
+    
     fn ltrim(&self, key: &str, start: i64, stop: i64) -> Result<(), DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(()),
+            None => return Ok(())
         };
-
+        
         let list = match &mut storage_val.value {
             ValueType::List(l) => l,
-            _ => return Ok(()),
+            _ => return Ok(())
         };
-
+        
         if list.is_empty() {
             return Ok(());
         }
-
+        
         let len = list.len() as i64;
-        let start_idx = if start < 0 {
-            std::cmp::max(0, len + start)
-        } else {
-            std::cmp::min(start, len)
+        let start_idx = if start < 0 { 
+            std::cmp::max(0, len + start) 
+        } else { 
+            std::cmp::min(start, len) 
         };
-        let stop_idx = if stop < 0 {
-            std::cmp::max(-1, len + stop)
-        } else {
-            std::cmp::min(stop, len - 1)
+        let stop_idx = if stop < 0 { 
+            std::cmp::max(-1, len + stop) 
+        } else { 
+            std::cmp::min(stop, len - 1) 
         };
-
+        
         if start_idx > stop_idx || start_idx >= len {
             self.del(key.to_string())?;
         } else {
             let start_usize = start_idx as usize;
             let stop_usize = (stop_idx + 1) as usize;
             *list = list[start_usize..std::cmp::min(stop_usize, list.len())].to_vec();
-
+            
             if list.is_empty() {
                 self.del(key.to_string())?;
             } else {
@@ -733,23 +680,23 @@ impl StorageBackend for SledStorage {
                 self.db.flush().map_err(|e| DBError(e.to_string()))?;
             }
         }
-
+        
         Ok(())
     }
-
+    
     fn lrem(&self, key: &str, count: i64, element: &str) -> Result<i64, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(0),
+            None => return Ok(0)
         };
-
+        
         let list = match &mut storage_val.value {
             ValueType::List(l) => l,
-            _ => return Ok(0),
+            _ => return Ok(0)
         };
-
+        
         let mut removed = 0i64;
-
+        
         if count == 0 {
             // Remove all occurrences
             let original_len = list.len();
@@ -778,17 +725,17 @@ impl StorageBackend for SledStorage {
                 }
             }
         }
-
+        
         if list.is_empty() {
             self.del(key.to_string())?;
         } else {
             self.set_storage_value(key, storage_val)?;
             self.db.flush().map_err(|e| DBError(e.to_string()))?;
         }
-
+        
         Ok(removed)
     }
-
+    
     // Expiration
     fn ttl(&self, key: &str) -> Result<i64, DBError> {
         match self.get_storage_value(key)? {
@@ -804,40 +751,40 @@ impl StorageBackend for SledStorage {
                     Ok(-1) // Key exists but has no expiration
                 }
             }
-            None => Ok(-2), // Key does not exist
+            None => Ok(-2) // Key does not exist
         }
     }
-
+    
     fn expire_seconds(&self, key: &str, secs: u64) -> Result<bool, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(false),
+            None => return Ok(false)
         };
-
+        
         storage_val.expires_at = Some(Self::now_millis() + (secs as u128) * 1000);
         self.set_storage_value(key, storage_val)?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(true)
     }
-
+    
     fn pexpire_millis(&self, key: &str, ms: u128) -> Result<bool, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(false),
+            None => return Ok(false)
         };
-
+        
         storage_val.expires_at = Some(Self::now_millis() + ms);
         self.set_storage_value(key, storage_val)?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(true)
     }
-
+    
     fn persist(&self, key: &str) -> Result<bool, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(false),
+            None => return Ok(false)
         };
-
+        
         if storage_val.expires_at.is_some() {
             storage_val.expires_at = None;
             self.set_storage_value(key, storage_val)?;
@@ -847,41 +794,37 @@ impl StorageBackend for SledStorage {
             Ok(false)
         }
     }
-
+    
     fn expire_at_seconds(&self, key: &str, ts_secs: i64) -> Result<bool, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(false),
-        };
-
-        let expires_at_ms: u128 = if ts_secs <= 0 {
-            0
-        } else {
-            (ts_secs as u128) * 1000
+            None => return Ok(false)
         };
+        
+        let expires_at_ms: u128 = if ts_secs <= 0 { 0 } else { (ts_secs as u128) * 1000 };
         storage_val.expires_at = Some(expires_at_ms);
         self.set_storage_value(key, storage_val)?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(true)
     }
-
+    
     fn pexpire_at_millis(&self, key: &str, ts_ms: i64) -> Result<bool, DBError> {
         let mut storage_val = match self.get_storage_value(key)? {
             Some(sv) => sv,
-            None => return Ok(false),
+            None => return Ok(false)
         };
-
+        
         let expires_at_ms: u128 = if ts_ms <= 0 { 0 } else { ts_ms as u128 };
         storage_val.expires_at = Some(expires_at_ms);
         self.set_storage_value(key, storage_val)?;
         self.db.flush().map_err(|e| DBError(e.to_string()))?;
         Ok(true)
     }
-
+    
     fn is_encrypted(&self) -> bool {
         self.crypto.is_some()
     }
-
+    
     fn info(&self) -> Result<Vec<(String, String)>, DBError> {
         let dbsize = self.dbsize()?;
         Ok(vec![
@@ -899,4 +842,4 @@ impl StorageBackend for SledStorage {
             crypto: self.crypto.clone(),
         })
     }
-}
+}

src/storage_trait.rs

@@ -13,22 +13,11 @@ pub trait StorageBackend: Send + Sync {
     fn dbsize(&self) -> Result<i64, DBError>;
     fn flushdb(&self) -> Result<(), DBError>;
     fn get_key_type(&self, key: &str) -> Result<Option<String>, DBError>;
-
+    
     // Scanning
-    fn scan(
-        &self,
-        cursor: u64,
-        pattern: Option<&str>,
-        count: Option<u64>,
-    ) -> Result<(u64, Vec<(String, String)>), DBError>;
-    fn hscan(
-        &self,
-        key: &str,
-        cursor: u64,
-        pattern: Option<&str>,
-        count: Option<u64>,
-    ) -> Result<(u64, Vec<(String, String)>), DBError>;
-
+    fn scan(&self, cursor: u64, pattern: Option<&str>, count: Option<u64>) -> Result<(u64, Vec<(String, String)>), DBError>;
+    fn hscan(&self, key: &str, cursor: u64, pattern: Option<&str>, count: Option<u64>) -> Result<(u64, Vec<(String, String)>), DBError>;
+    
     // Hash operations
     fn hset(&self, key: &str, pairs: Vec<(String, String)>) -> Result<i64, DBError>;
     fn hget(&self, key: &str, field: &str) -> Result<Option<String>, DBError>;
@@ -40,7 +29,7 @@ pub trait StorageBackend: Send + Sync {
     fn hlen(&self, key: &str) -> Result<i64, DBError>;
     fn hmget(&self, key: &str, fields: Vec<String>) -> Result<Vec<Option<String>>, DBError>;
     fn hsetnx(&self, key: &str, field: &str, value: &str) -> Result<bool, DBError>;
-
+    
     // List operations
     fn lpush(&self, key: &str, elements: Vec<String>) -> Result<i64, DBError>;
     fn rpush(&self, key: &str, elements: Vec<String>) -> Result<i64, DBError>;
@@ -51,7 +40,7 @@ pub trait StorageBackend: Send + Sync {
     fn lrange(&self, key: &str, start: i64, stop: i64) -> Result<Vec<String>, DBError>;
     fn ltrim(&self, key: &str, start: i64, stop: i64) -> Result<(), DBError>;
     fn lrem(&self, key: &str, count: i64, element: &str) -> Result<i64, DBError>;
-
+    
     // Expiration
     fn ttl(&self, key: &str) -> Result<i64, DBError>;
     fn expire_seconds(&self, key: &str, secs: u64) -> Result<bool, DBError>;
@@ -59,11 +48,11 @@ pub trait StorageBackend: Send + Sync {
     fn persist(&self, key: &str) -> Result<bool, DBError>;
     fn expire_at_seconds(&self, key: &str, ts_secs: i64) -> Result<bool, DBError>;
     fn pexpire_at_millis(&self, key: &str, ts_ms: i64) -> Result<bool, DBError>;
-
+    
     // Metadata
     fn is_encrypted(&self) -> bool;
     fn info(&self) -> Result<Vec<(String, String)>, DBError>;
-
+    
     // Clone to Arc for sharing
     fn clone_arc(&self) -> Arc<dyn StorageBackend>;
-}
+}

src/sym.rs

@@ -0,0 +1,123 @@
+//! sym.rs — Stateless symmetric encryption (Phase 1)
+//!
+//! Commands implemented (RESP):
+//! - SYM KEYGEN
+//! - SYM ENCRYPT <key_b64> <message>
+//! - SYM DECRYPT <key_b64> <ciphertext_b64>
+//!
+//! Notes:
+//! - Raw key: exactly 32 bytes, provided as Base64 in commands.
+//! - Cipher: XChaCha20-Poly1305 (AEAD) without AAD in Phase 1
+//! - Ciphertext binary layout: [version:1][nonce:24][ciphertext||tag]
+//! - Encoding for wire I/O: Base64
+
+use base64::{engine::general_purpose::STANDARD as B64, Engine as _};
+use chacha20poly1305::{
+    aead::{Aead, KeyInit, OsRng},
+    XChaCha20Poly1305, XNonce,
+};
+use rand::RngCore;
+
+use crate::protocol::Protocol;
+
+const VERSION: u8 = 1;
+const NONCE_LEN: usize = 24;
+const TAG_LEN: usize = 16;
+
+#[derive(Debug)]
+pub enum SymWireError {
+    InvalidKey,
+    BadEncoding,
+    BadFormat,
+    BadVersion(u8),
+    Crypto,
+}
+
+impl SymWireError {
+    fn to_protocol(self) -> Protocol {
+        match self {
+            SymWireError::InvalidKey => Protocol::err("ERR sym: invalid key"),
+            SymWireError::BadEncoding => Protocol::err("ERR sym: bad encoding"),
+            SymWireError::BadFormat => Protocol::err("ERR sym: bad format"),
+            SymWireError::BadVersion(v) => Protocol::err(&format!("ERR sym: unsupported version {}", v)),
+            SymWireError::Crypto => Protocol::err("ERR sym: auth failed"),
+        }
+    }
+}
+
+fn decode_key_b64(s: &str) -> Result<chacha20poly1305::Key, SymWireError> {
+    let bytes = B64.decode(s.as_bytes()).map_err(|_| SymWireError::BadEncoding)?;
+    if bytes.len() != 32 {
+        return Err(SymWireError::InvalidKey);
+    }
+    Ok(chacha20poly1305::Key::from_slice(&bytes).to_owned())
+}
+
+fn encrypt_blob(key: &chacha20poly1305::Key, plaintext: &[u8]) -> Result<Vec<u8>, SymWireError> {
+    let cipher = XChaCha20Poly1305::new(key);
+
+    let mut nonce_bytes = [0u8; NONCE_LEN];
+    OsRng.fill_bytes(&mut nonce_bytes);
+    let nonce = XNonce::from_slice(&nonce_bytes);
+
+    let mut out = Vec::with_capacity(1 + NONCE_LEN + plaintext.len() + TAG_LEN);
+    out.push(VERSION);
+    out.extend_from_slice(&nonce_bytes);
+
+    let ct = cipher.encrypt(nonce, plaintext).map_err(|_| SymWireError::Crypto)?;
+    out.extend_from_slice(&ct);
+    Ok(out)
+}
+
+fn decrypt_blob(key: &chacha20poly1305::Key, blob: &[u8]) -> Result<Vec<u8>, SymWireError> {
+    if blob.len() < 1 + NONCE_LEN + TAG_LEN {
+        return Err(SymWireError::BadFormat);
+    }
+    let ver = blob[0];
+    if ver != VERSION {
+        return Err(SymWireError::BadVersion(ver));
+    }
+    let nonce = XNonce::from_slice(&blob[1..1 + NONCE_LEN]);
+    let ct = &blob[1 + NONCE_LEN..];
+
+    let cipher = XChaCha20Poly1305::new(key);
+    cipher.decrypt(nonce, ct).map_err(|_| SymWireError::Crypto)
+}
+
+// ---------- Command handlers (RESP) ----------
+
+pub async fn cmd_sym_keygen() -> Protocol {
+    let mut key_bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut key_bytes);
+    let key_b64 = B64.encode(key_bytes);
+    Protocol::BulkString(key_b64)
+}
+
+pub async fn cmd_sym_encrypt(key_b64: &str, message: &str) -> Protocol {
+    let key = match decode_key_b64(key_b64) {
+        Ok(k) => k,
+        Err(e) => return e.to_protocol(),
+    };
+    match encrypt_blob(&key, message.as_bytes()) {
+        Ok(blob) => Protocol::BulkString(B64.encode(blob)),
+        Err(e) => e.to_protocol(),
+    }
+}
+
+pub async fn cmd_sym_decrypt(key_b64: &str, ct_b64: &str) -> Protocol {
+    let key = match decode_key_b64(key_b64) {
+        Ok(k) => k,
+        Err(e) => return e.to_protocol(),
+    };
+    let blob = match B64.decode(ct_b64.as_bytes()) {
+        Ok(b) => b,
+        Err(_) => return SymWireError::BadEncoding.to_protocol(),
+    };
+    match decrypt_blob(&key, &blob) {
+        Ok(pt) => match String::from_utf8(pt) {
+            Ok(s) => Protocol::BulkString(s),
+            Err(_) => Protocol::err("ERR sym: invalid UTF-8 plaintext"),
+        },
+        Err(e) => e.to_protocol(),
+    }
+}

src/tantivy_search.rs

@@ -7,10 +7,13 @@ use tantivy::{
     collector::TopDocs,
     directory::MmapDirectory,
     query::{BooleanQuery, Occur, Query, QueryParser, TermQuery},
-    schema::{Field, Schema, TextFieldIndexing, TextOptions, Value, STORED, STRING},
+    schema::{
+        DateOptions, Field, IndexRecordOption, NumericOptions, Schema, TextFieldIndexing, TextOptions, STORED, STRING,
+    },
     tokenizer::TokenizerManager,
-    DateTime, Index, IndexReader, IndexWriter, ReloadPolicy, TantivyDocument, Term,
+    DateTime, Index, IndexReader, IndexWriter, TantivyDocument, Term,
 };
+use tantivy::schema::Value;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum FieldDef {
@@ -121,25 +124,20 @@ impl TantivySearch {
                     fast: _fast,
                 } => {
                     let mut text_options = TextOptions::default();
-
                     if *stored {
                         text_options = text_options.set_stored();
                     }
-
                     if *indexed {
                         let indexing_options = if *tokenized {
                             TextFieldIndexing::default()
                                 .set_tokenizer("default")
-                                .set_index_option(
-                                    tantivy::schema::IndexRecordOption::WithFreqsAndPositions,
-                                )
+                                .set_index_option(IndexRecordOption::WithFreqsAndPositions)
                         } else {
                             TextFieldIndexing::default()
                                 .set_tokenizer("raw")
-                                .set_index_option(tantivy::schema::IndexRecordOption::Basic)
+                                .set_index_option(IndexRecordOption::Basic)
                         };
                         text_options = text_options.set_indexing_options(indexing_options);
-
                         let f = schema_builder.add_text_field(&field_name, text_options);
                         if *tokenized {
                             default_search_fields.push(f);
@@ -156,7 +154,7 @@ impl TantivySearch {
                     precision,
                 } => match precision {
                     NumericType::I64 => {
-                        let mut opts = tantivy::schema::NumericOptions::default();
+                        let mut opts = NumericOptions::default();
                         if *stored {
                             opts = opts.set_stored();
                         }
@@ -169,7 +167,7 @@ impl TantivySearch {
                         schema_builder.add_i64_field(&field_name, opts)
                     }
                     NumericType::U64 => {
-                        let mut opts = tantivy::schema::NumericOptions::default();
+                        let mut opts = NumericOptions::default();
                         if *stored {
                             opts = opts.set_stored();
                         }
@@ -182,7 +180,7 @@ impl TantivySearch {
                         schema_builder.add_u64_field(&field_name, opts)
                     }
                     NumericType::F64 => {
-                        let mut opts = tantivy::schema::NumericOptions::default();
+                        let mut opts = NumericOptions::default();
                         if *stored {
                             opts = opts.set_stored();
                         }
@@ -195,7 +193,7 @@ impl TantivySearch {
                         schema_builder.add_f64_field(&field_name, opts)
                     }
                     NumericType::Date => {
-                        let mut opts = tantivy::schema::DateOptions::default();
+                        let mut opts = DateOptions::default();
                         if *stored {
                             opts = opts.set_stored();
                         }
@@ -220,23 +218,21 @@ impl TantivySearch {
                     text_options = text_options.set_indexing_options(
                         TextFieldIndexing::default()
                             .set_tokenizer("raw")
-                            .set_index_option(tantivy::schema::IndexRecordOption::Basic),
+                            .set_index_option(IndexRecordOption::Basic),
                     );
                     schema_builder.add_text_field(&field_name, text_options)
                 }
                 FieldDef::Geo { stored } => {
                     // For now, store as two f64 fields for lat/lon
-                    let mut opts = tantivy::schema::NumericOptions::default();
+                    let mut opts = NumericOptions::default();
                     if *stored {
                         opts = opts.set_stored();
                     }
                     opts = opts.set_indexed().set_fast();
-
                     let lat_field =
                         schema_builder.add_f64_field(&format!("{}_lat", field_name), opts.clone());
                     let lon_field =
                         schema_builder.add_f64_field(&format!("{}_lon", field_name), opts);
-
                     fields.insert(
                         format!("{}_lat", field_name),
                         (
@@ -264,7 +260,6 @@ impl TantivySearch {
                     continue; // Skip adding the geo field itself
                 }
             };
-
             fields.insert(field_name.clone(), (field, field_def));
         }
 
@@ -278,9 +273,8 @@ impl TantivySearch {
         // Create or open index
         let dir = MmapDirectory::open(&index_path)
             .map_err(|e| DBError(format!("Failed to open index directory: {}", e)))?;
-
-        let mut index = Index::open_or_create(dir, schema)
-            .map_err(|e| DBError(format!("Failed to create index: {}", e)))?;
+        let mut index =
+            Index::open_or_create(dir, schema).map_err(|e| DBError(format!("Failed to create index: {}", e)))?;
 
         // Configure tokenizers
         let tokenizer_manager = TokenizerManager::default();
@@ -289,11 +283,8 @@ impl TantivySearch {
         let writer = index
             .writer(15_000_000)
             .map_err(|e| DBError(format!("Failed to create index writer: {}", e)))?;
-
         let reader = index
-            .reader_builder()
-            .reload_policy(ReloadPolicy::OnCommitWithDelay)
-            .try_into()
+            .reader()
             .map_err(|e| DBError(format!("Failed to create reader: {}", e)))?;
 
         let config = config.unwrap_or_default();
@@ -370,14 +361,11 @@ impl TantivySearch {
                         } else {
                             field_value.clone()
                         };
-
-                        // Store tags as separate terms for efficient filtering
                         for tag in tags.split(separator.as_str()) {
                             doc.add_text(*field, tag.trim());
                         }
                     }
                     FieldDef::Geo { .. } => {
-                        // Parse "lat,lon" format
                         let parts: Vec<&str> = field_value.split(',').collect();
                         if parts.len() == 2 {
                             if let (Ok(lat), Ok(lon)) =
@@ -403,11 +391,9 @@ impl TantivySearch {
         writer
             .add_document(doc)
             .map_err(|e| DBError(format!("Failed to add document: {}", e)))?;
-
         writer
             .commit()
             .map_err(|e| DBError(format!("Failed to commit: {}", e)))?;
-
         Ok(())
     }
 
@@ -418,82 +404,111 @@ impl TantivySearch {
     ) -> Result<SearchResults, DBError> {
         let searcher = self.reader.searcher();
 
-        // Parse query based on search fields
-        let query: Box<dyn Query> = if self.index_schema.default_search_fields.is_empty() {
-            return Err(DBError(
-                "No searchable fields defined in schema".to_string(),
-            ));
-        } else {
-            let query_parser = QueryParser::for_index(
-                &self.index,
-                self.index_schema.default_search_fields.clone(),
-            );
+        // Ensure we have searchable fields
+        if self.index_schema.default_search_fields.is_empty() {
+            return Err(DBError("No searchable fields defined in schema".to_string()));
+        }
 
-            Box::new(
-                query_parser
-                    .parse_query(query_str)
-                    .map_err(|e| DBError(format!("Failed to parse query: {}", e)))?,
-            )
-        };
+        // Parse query based on search fields
+        let query_parser = QueryParser::for_index(
+            &self.index,
+            self.index_schema.default_search_fields.clone(),
+        );
+        let parsed_query = query_parser
+            .parse_query(query_str)
+            .map_err(|e| DBError(format!("Failed to parse query: {}", e)))?;
+        let mut clauses: Vec<(Occur, Box<dyn Query>)> = vec![(Occur::Must, parsed_query)];
 
         // Apply filters if any
-        let final_query = if !options.filters.is_empty() {
-            let mut clauses: Vec<(Occur, Box<dyn Query>)> = vec![(Occur::Must, query)];
-
-            // Add filters
-            for filter in options.filters {
-                if let Some((field, _)) = self.index_schema.fields.get(&filter.field) {
-                    match filter.filter_type {
-                        FilterType::Equals(value) => {
+        for filter in options.filters {
+            if let Some((field, field_def)) = self.index_schema.fields.get(&filter.field) {
+                match filter.filter_type {
+                    FilterType::Equals(value) => {
+                        match field_def {
+                            FieldDef::Text { .. } | FieldDef::Tag { .. } => {
+                                let term_query =
+                                    TermQuery::new(Term::from_field_text(*field, &value), IndexRecordOption::Basic);
+                                clauses.push((Occur::Must, Box::new(term_query)));
+                            }
+                            FieldDef::Numeric { precision, .. } => {
+                                // Equals on numeric fields: parse to the right numeric type and use term query
+                                match precision {
+                                    NumericType::I64 => {
+                                        if let Ok(v) = value.parse::<i64>() {
+                                            let term = Term::from_field_i64(*field, v);
+                                            let tq = TermQuery::new(term, IndexRecordOption::Basic);
+                                            clauses.push((Occur::Must, Box::new(tq)));
+                                        }
+                                    }
+                                    NumericType::U64 => {
+                                        if let Ok(v) = value.parse::<u64>() {
+                                            let term = Term::from_field_u64(*field, v);
+                                            let tq = TermQuery::new(term, IndexRecordOption::Basic);
+                                            clauses.push((Occur::Must, Box::new(tq)));
+                                        }
+                                    }
+                                    NumericType::F64 => {
+                                        if let Ok(v) = value.parse::<f64>() {
+                                            let term = Term::from_field_f64(*field, v);
+                                            let tq = TermQuery::new(term, IndexRecordOption::Basic);
+                                            clauses.push((Occur::Must, Box::new(tq)));
+                                        }
+                                    }
+                                    NumericType::Date => {
+                                        if let Ok(v) = value.parse::<i64>() {
+                                            let dt = DateTime::from_timestamp_millis(v);
+                                            let term = Term::from_field_date(*field, dt);
+                                            let tq = TermQuery::new(term, IndexRecordOption::Basic);
+                                            clauses.push((Occur::Must, Box::new(tq)));
+                                        }
+                                    }
+                                }
+                            }
+                            FieldDef::Geo { .. } => {
+                                // Geo equals isn't supported in this simplified version
+                            }
+                        }
+                    }
+                    FilterType::Range { .. } => {
+                        // TODO: Implement numeric range queries by building a RangeQuery per type
+                    }
+                    FilterType::InSet(values) => {
+                        // OR across values
+                        let mut sub_clauses: Vec<(Occur, Box<dyn Query>)> = vec![];
+                        for value in values {
                             let term_query = TermQuery::new(
                                 Term::from_field_text(*field, &value),
-                                tantivy::schema::IndexRecordOption::Basic,
+                                IndexRecordOption::Basic,
                             );
-                            clauses.push((Occur::Must, Box::new(term_query)));
-                        }
-                        FilterType::Range { min: _, max: _ } => {
-                            // Would need numeric field handling here
-                            // Simplified for now
-                        }
-                        FilterType::InSet(values) => {
-                            let mut sub_clauses: Vec<(Occur, Box<dyn Query>)> = vec![];
-                            for value in values {
-                                let term_query = TermQuery::new(
-                                    Term::from_field_text(*field, &value),
-                                    tantivy::schema::IndexRecordOption::Basic,
-                                );
-                                sub_clauses.push((Occur::Should, Box::new(term_query)));
-                            }
-                            clauses.push((Occur::Must, Box::new(BooleanQuery::new(sub_clauses))));
+                            sub_clauses.push((Occur::Should, Box::new(term_query)));
                         }
+                        clauses.push((Occur::Must, Box::new(BooleanQuery::new(sub_clauses))));
                     }
                 }
             }
+        }
 
-            Box::new(BooleanQuery::new(clauses))
+        let final_query: Box<dyn Query> = if clauses.len() == 1 {
+            clauses.pop().unwrap().1
         } else {
-            query
+            Box::new(BooleanQuery::new(clauses))
         };
 
         // Execute search
         let top_docs = searcher
-            .search(
-                &*final_query,
-                &TopDocs::with_limit(options.limit + options.offset),
-            )
+            .search(&*final_query, &TopDocs::with_limit(options.limit + options.offset))
             .map_err(|e| DBError(format!("Search failed: {}", e)))?;
-
         let total_hits = top_docs.len();
         let mut documents = Vec::new();
 
-        for (score, doc_address) in top_docs.iter().skip(options.offset).take(options.limit) {
+        for (score, doc_address) in top_docs.into_iter().skip(options.offset).take(options.limit) {
             let retrieved_doc: TantivyDocument = searcher
-                .doc(*doc_address)
+                .doc(doc_address)
                 .map_err(|e| DBError(format!("Failed to retrieve doc: {}", e)))?;
 
             let mut doc_fields = HashMap::new();
 
-            // Extract all stored fields
+            // Extract stored fields (or synthesize)
             for (field_name, (field, field_def)) in &self.index_schema.fields {
                 match field_def {
                     FieldDef::Text { stored, .. } | FieldDef::Tag { stored, .. } => {
@@ -527,7 +542,6 @@ impl TantivySearch {
                                     .and_then(|v| v.as_datetime())
                                     .map(|v| v.into_timestamp_millis().to_string()),
                             };
-
                             if let Some(v) = value_str {
                                 doc_fields.insert(field_name.clone(), v);
                             }
@@ -547,10 +561,8 @@ impl TantivySearch {
                                 .get(&format!("{}_lon", field_name))
                                 .unwrap()
                                 .0;
-
                             let lat = retrieved_doc.get_first(lat_field).and_then(|v| v.as_f64());
                             let lon = retrieved_doc.get_first(lon_field).and_then(|v| v.as_f64());
-
                             if let (Some(lat), Some(lon)) = (lat, lon) {
                                 doc_fields.insert(field_name.clone(), format!("{},{}", lat, lon));
                             }
@@ -561,7 +573,7 @@ impl TantivySearch {
 
             documents.push(SearchDocument {
                 fields: doc_fields,
-                score: *score,
+                score,
             });
         }
 
@@ -574,7 +586,6 @@ impl TantivySearch {
     pub fn get_info(&self) -> Result<IndexInfo, DBError> {
         let searcher = self.reader.searcher();
         let num_docs = searcher.num_docs();
-
         let fields_info: Vec<FieldInfo> = self
             .index_schema
             .fields
@@ -584,7 +595,6 @@ impl TantivySearch {
                 field_type: format!("{:?}", def),
             })
             .collect();
-
         Ok(IndexInfo {
             name: self.name.clone(),
             num_docs,
@@ -654,4 +664,4 @@ pub struct IndexInfo {
 pub struct FieldInfo {
     pub name: String,
     pub field_type: String,
-}
+}

test_herodb.sh

@@ -1,10 +1,11 @@
 #!/bin/bash
+set -euo pipefail
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
 
 # Test script for HeroDB - Redis-compatible database with redb backend
 # This script starts the server and runs comprehensive tests
 
-set -e
-
 # Colors for output
 RED='\033[0;31m'
 GREEN='\033[0;32m'

tests/debug_hset.rs

@@ -1,4 +1,4 @@
-use herodb::{options::DBOption, server::Server};
+use herodb::{server::Server, options::DBOption};
 use std::time::Duration;
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::TcpStream;
@@ -7,7 +7,7 @@ use tokio::time::sleep;
 // Helper function to send command and get response
 async fn send_command(stream: &mut TcpStream, command: &str) -> String {
     stream.write_all(command.as_bytes()).await.unwrap();
-
+    
     let mut buffer = [0; 1024];
     let n = stream.read(&mut buffer).await.unwrap();
     String::from_utf8_lossy(&buffer[..n]).to_string()
@@ -19,7 +19,7 @@ async fn debug_hset_simple() {
     let test_dir = "/tmp/herodb_debug_hset";
     let _ = std::fs::remove_dir_all(test_dir);
     std::fs::create_dir_all(test_dir).unwrap();
-
+    
     let port = 16500;
     let option = DBOption {
         dir: test_dir.to_string(),
@@ -28,50 +28,43 @@ async fn debug_hset_simple() {
         encrypt: false,
         encryption_key: None,
         backend: herodb::options::BackendType::Redb,
+        admin_secret: "test-admin".to_string(),
     };
-
+    
     let mut server = Server::new(option).await;
-
+    
     // Start server in background
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(200)).await;
-
-    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port))
-        .await
-        .unwrap();
-
+    
+    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port)).await.unwrap();
+    // Acquire ReadWrite permissions on this connection
+    let resp = send_command(
+        &mut stream,
+        "*4\r\n$6\r\nSELECT\r\n$1\r\n0\r\n$3\r\nKEY\r\n$10\r\ntest-admin\r\n",
+    ).await;
+    assert!(resp.contains("OK"), "Failed SELECT handshake: {}", resp);
+    
     // Test simple HSET
     println!("Testing HSET...");
-    let response = send_command(
-        &mut stream,
-        "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n").await;
     println!("HSET response: {}", response);
     assert!(response.contains("1"), "Expected '1' but got: {}", response);
-
+    
     // Test HGET
     println!("Testing HGET...");
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$4\r\nHGET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$4\r\nHGET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n").await;
     println!("HGET response: {}", response);
-    assert!(
-        response.contains("value1"),
-        "Expected 'value1' but got: {}",
-        response
-    );
-}
+    assert!(response.contains("value1"), "Expected 'value1' but got: {}", response);
+}

tests/debug_hset_simple.rs

@@ -1,4 +1,4 @@
-use herodb::{options::DBOption, server::Server};
+use herodb::{server::Server, options::DBOption};
 use std::time::Duration;
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::TcpStream;
@@ -7,11 +7,11 @@ use tokio::time::sleep;
 #[tokio::test]
 async fn debug_hset_return_value() {
     let test_dir = "/tmp/herodb_debug_hset_return";
-
+    
     // Clean up any existing test data
     let _ = std::fs::remove_dir_all(&test_dir);
     std::fs::create_dir_all(&test_dir).unwrap();
-
+    
     let option = DBOption {
         dir: test_dir.to_string(),
         port: 16390,
@@ -19,43 +19,47 @@ async fn debug_hset_return_value() {
         encrypt: false,
         encryption_key: None,
         backend: herodb::options::BackendType::Redb,
+        admin_secret: "test-admin".to_string(),
     };
-
+    
     let mut server = Server::new(option).await;
-
+    
     // Start server in background
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind("127.0.0.1:16390")
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(200)).await;
-
+    
     // Connect and test HSET
     let mut stream = TcpStream::connect("127.0.0.1:16390").await.unwrap();
 
+    // Acquire ReadWrite permissions for this new connection
+    let handshake = "*4\r\n$6\r\nSELECT\r\n$1\r\n0\r\n$3\r\nKEY\r\n$10\r\ntest-admin\r\n";
+    stream.write_all(handshake.as_bytes()).await.unwrap();
+    let mut buffer = [0; 1024];
+    let n = stream.read(&mut buffer).await.unwrap();
+    let resp = String::from_utf8_lossy(&buffer[..n]);
+    assert!(resp.contains("OK"), "Failed SELECT handshake: {}", resp);
+    
     // Send HSET command
     let cmd = "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n";
     stream.write_all(cmd.as_bytes()).await.unwrap();
-
-    let mut buffer = [0; 1024];
+    
     let n = stream.read(&mut buffer).await.unwrap();
     let response = String::from_utf8_lossy(&buffer[..n]);
-
+    
     println!("HSET response: {}", response);
     println!("Response bytes: {:?}", &buffer[..n]);
-
+    
     // Check if response contains "1"
-    assert!(
-        response.contains("1"),
-        "Expected response to contain '1', got: {}",
-        response
-    );
-}
+    assert!(response.contains("1"), "Expected response to contain '1', got: {}", response);
+}

tests/debug_protocol.rs

@@ -1,15 +1,12 @@
-use herodb::cmd::Cmd;
 use herodb::protocol::Protocol;
+use herodb::cmd::Cmd;
 
 #[test]
 fn test_protocol_parsing() {
     // Test TYPE command parsing
     let type_cmd = "*2\r\n$4\r\nTYPE\r\n$7\r\nnoexist\r\n";
-    println!(
-        "Parsing TYPE command: {}",
-        type_cmd.replace("\r\n", "\\r\\n")
-    );
-
+    println!("Parsing TYPE command: {}", type_cmd.replace("\r\n", "\\r\\n"));
+    
     match Protocol::from(type_cmd) {
         Ok((protocol, _)) => {
             println!("Protocol parsed successfully: {:?}", protocol);
@@ -20,14 +17,11 @@ fn test_protocol_parsing() {
         }
         Err(e) => println!("Protocol parsing failed: {:?}", e),
     }
-
+    
     // Test HEXISTS command parsing
     let hexists_cmd = "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$7\r\nnoexist\r\n";
-    println!(
-        "\nParsing HEXISTS command: {}",
-        hexists_cmd.replace("\r\n", "\\r\\n")
-    );
-
+    println!("\nParsing HEXISTS command: {}", hexists_cmd.replace("\r\n", "\\r\\n"));
+    
     match Protocol::from(hexists_cmd) {
         Ok((protocol, _)) => {
             println!("Protocol parsed successfully: {:?}", protocol);
@@ -38,4 +32,4 @@ fn test_protocol_parsing() {
         }
         Err(e) => println!("Protocol parsing failed: {:?}", e),
     }
-}
+}

tests/redis_integration_tests.rs

@@ -12,7 +12,15 @@ fn get_redis_connection(port: u16) -> Connection {
         match client.get_connection() {
             Ok(mut conn) => {
                 if redis::cmd("PING").query::<String>(&mut conn).is_ok() {
-                    return conn;
+                    // Acquire ReadWrite permissions on this connection
+                    let sel: RedisResult<String> = redis::cmd("SELECT")
+                        .arg(0)
+                        .arg("KEY")
+                        .arg("test-admin")
+                        .query(&mut conn);
+                    if sel.is_ok() {
+                        return conn;
+                    }
                 }
             }
             Err(e) => {
@@ -78,16 +86,18 @@ fn setup_server() -> (ServerProcessGuard, u16) {
             "--port",
             &port.to_string(),
             "--debug",
+            "--admin-secret",
+            "test-admin",
         ])
         .spawn()
         .expect("Failed to start server process");
-
+    
     // Create a new guard that also owns the test directory path
     let guard = ServerProcessGuard {
         process: child,
         test_dir,
     };
-
+    
     // Give the server time to build and start (cargo run may compile first)
     std::thread::sleep(Duration::from_millis(2500));
 
@@ -206,9 +216,7 @@ async fn test_expiration(conn: &mut Connection) {
 async fn test_scan_operations(conn: &mut Connection) {
     cleanup_keys(conn).await;
     for i in 0..5 {
-        let _: () = conn
-            .set(format!("key{}", i), format!("value{}", i))
-            .unwrap();
+        let _: () = conn.set(format!("key{}", i), format!("value{}", i)).unwrap();
     }
     let result: (u64, Vec<String>) = redis::cmd("SCAN")
         .arg(0)
@@ -255,9 +263,7 @@ async fn test_scan_with_count(conn: &mut Connection) {
 async fn test_hscan_operations(conn: &mut Connection) {
     cleanup_keys(conn).await;
     for i in 0..3 {
-        let _: () = conn
-            .hset("testhash", format!("field{}", i), format!("value{}", i))
-            .unwrap();
+        let _: () = conn.hset("testhash", format!("field{}", i), format!("value{}", i)).unwrap();
     }
     let result: (u64, Vec<String>) = redis::cmd("HSCAN")
         .arg("testhash")
@@ -277,16 +283,8 @@ async fn test_hscan_operations(conn: &mut Connection) {
 async fn test_transaction_operations(conn: &mut Connection) {
     cleanup_keys(conn).await;
     let _: () = redis::cmd("MULTI").query(conn).unwrap();
-    let _: () = redis::cmd("SET")
-        .arg("key1")
-        .arg("value1")
-        .query(conn)
-        .unwrap();
-    let _: () = redis::cmd("SET")
-        .arg("key2")
-        .arg("value2")
-        .query(conn)
-        .unwrap();
+    let _: () = redis::cmd("SET").arg("key1").arg("value1").query(conn).unwrap();
+    let _: () = redis::cmd("SET").arg("key2").arg("value2").query(conn).unwrap();
     let _: Vec<String> = redis::cmd("EXEC").query(conn).unwrap();
     let result: String = conn.get("key1").unwrap();
     assert_eq!(result, "value1");
@@ -298,11 +296,7 @@ async fn test_transaction_operations(conn: &mut Connection) {
 async fn test_discard_transaction(conn: &mut Connection) {
     cleanup_keys(conn).await;
     let _: () = redis::cmd("MULTI").query(conn).unwrap();
-    let _: () = redis::cmd("SET")
-        .arg("discard")
-        .arg("value")
-        .query(conn)
-        .unwrap();
+    let _: () = redis::cmd("SET").arg("discard").arg("value").query(conn).unwrap();
     let _: () = redis::cmd("DISCARD").query(conn).unwrap();
     let result: Option<String> = conn.get("discard").unwrap();
     assert_eq!(result, None);
@@ -322,6 +316,7 @@ async fn test_type_command(conn: &mut Connection) {
     cleanup_keys(conn).await;
 }
 
+
 async fn test_info_command(conn: &mut Connection) {
     cleanup_keys(conn).await;
     let result: String = redis::cmd("INFO").query(conn).unwrap();

tests/redis_tests.rs

@@ -1,4 +1,4 @@
-use herodb::{options::DBOption, server::Server};
+use herodb::{server::Server, options::DBOption};
 use std::time::Duration;
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::TcpStream;
@@ -8,14 +8,14 @@ use tokio::time::sleep;
 async fn start_test_server(test_name: &str) -> (Server, u16) {
     use std::sync::atomic::{AtomicU16, Ordering};
     static PORT_COUNTER: AtomicU16 = AtomicU16::new(16379);
-
+    
     let port = PORT_COUNTER.fetch_add(1, Ordering::SeqCst);
     let test_dir = format!("/tmp/herodb_test_{}", test_name);
-
+    
     // Clean up and create test directory
     let _ = std::fs::remove_dir_all(&test_dir);
     std::fs::create_dir_all(&test_dir).unwrap();
-
+    
     let option = DBOption {
         dir: test_dir,
         port,
@@ -23,18 +23,29 @@ async fn start_test_server(test_name: &str) -> (Server, u16) {
         encrypt: false,
         encryption_key: None,
         backend: herodb::options::BackendType::Redb,
+        admin_secret: "test-admin".to_string(),
     };
-
+    
     let server = Server::new(option).await;
     (server, port)
 }
 
-// Helper function to connect to the test server
+ // Helper function to connect to the test server
 async fn connect_to_server(port: u16) -> TcpStream {
     let mut attempts = 0;
     loop {
         match TcpStream::connect(format!("127.0.0.1:{}", port)).await {
-            Ok(stream) => return stream,
+            Ok(mut stream) => {
+                // Obtain ReadWrite permissions for this connection by selecting DB 0 with admin key
+                let resp = send_command(
+                    &mut stream,
+                    "*4\r\n$6\r\nSELECT\r\n$1\r\n0\r\n$3\r\nKEY\r\n$10\r\ntest-admin\r\n",
+                ).await;
+                if !resp.contains("OK") {
+                    panic!("Failed to acquire write permissions via SELECT 0 KEY test-admin: {}", resp);
+                }
+                return stream;
+            }
             Err(_) if attempts < 10 => {
                 attempts += 1;
                 sleep(Duration::from_millis(100)).await;
@@ -47,7 +58,7 @@ async fn connect_to_server(port: u16) -> TcpStream {
 // Helper function to send command and get response
 async fn send_command(stream: &mut TcpStream, command: &str) -> String {
     stream.write_all(command.as_bytes()).await.unwrap();
-
+    
     let mut buffer = [0; 1024];
     let n = stream.read(&mut buffer).await.unwrap();
     String::from_utf8_lossy(&buffer[..n]).to_string()
@@ -56,22 +67,22 @@ async fn send_command(stream: &mut TcpStream, command: &str) -> String {
 #[tokio::test]
 async fn test_basic_ping() {
     let (mut server, port) = start_test_server("ping").await;
-
+    
     // Start server in background
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
     let response = send_command(&mut stream, "*1\r\n$4\r\nPING\r\n").await;
     assert!(response.contains("PONG"));
@@ -80,44 +91,40 @@ async fn test_basic_ping() {
 #[tokio::test]
 async fn test_string_operations() {
     let (mut server, port) = start_test_server("string").await;
-
+    
     // Start server in background
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test SET
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n").await;
     assert!(response.contains("OK"));
-
+    
     // Test GET
     let response = send_command(&mut stream, "*2\r\n$3\r\nGET\r\n$3\r\nkey\r\n").await;
     assert!(response.contains("value"));
-
+    
     // Test GET non-existent key
     let response = send_command(&mut stream, "*2\r\n$3\r\nGET\r\n$7\r\nnoexist\r\n").await;
     assert!(response.contains("$-1")); // NULL response
-
+    
     // Test DEL
     let response = send_command(&mut stream, "*2\r\n$3\r\nDEL\r\n$3\r\nkey\r\n").await;
     assert!(response.contains("1"));
-
+    
     // Test GET after DEL
     let response = send_command(&mut stream, "*2\r\n$3\r\nGET\r\n$3\r\nkey\r\n").await;
     assert!(response.contains("$-1")); // NULL response
@@ -126,37 +133,33 @@ async fn test_string_operations() {
 #[tokio::test]
 async fn test_incr_operations() {
     let (mut server, port) = start_test_server("incr").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test INCR on non-existent key
     let response = send_command(&mut stream, "*2\r\n$4\r\nINCR\r\n$7\r\ncounter\r\n").await;
     assert!(response.contains("1"));
-
+    
     // Test INCR on existing key
     let response = send_command(&mut stream, "*2\r\n$4\r\nINCR\r\n$7\r\ncounter\r\n").await;
     assert!(response.contains("2"));
-
+    
     // Test INCR on string value (should fail)
-    send_command(
-        &mut stream,
-        "*3\r\n$3\r\nSET\r\n$6\r\nstring\r\n$5\r\nhello\r\n",
-    )
-    .await;
+    send_command(&mut stream, "*3\r\n$3\r\nSET\r\n$6\r\nstring\r\n$5\r\nhello\r\n").await;
     let response = send_command(&mut stream, "*2\r\n$4\r\nINCR\r\n$6\r\nstring\r\n").await;
     assert!(response.contains("ERR"));
 }
@@ -164,83 +167,63 @@ async fn test_incr_operations() {
 #[tokio::test]
 async fn test_hash_operations() {
     let (mut server, port) = start_test_server("hash").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test HSET
-    let response = send_command(
-        &mut stream,
-        "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n").await;
     assert!(response.contains("1")); // 1 new field
-
+    
     // Test HGET
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$4\r\nHGET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$4\r\nHGET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n").await;
     assert!(response.contains("value1"));
-
+    
     // Test HSET multiple fields
     let response = send_command(&mut stream, "*6\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield2\r\n$6\r\nvalue2\r\n$6\r\nfield3\r\n$6\r\nvalue3\r\n").await;
     assert!(response.contains("2")); // 2 new fields
-
+    
     // Test HGETALL
     let response = send_command(&mut stream, "*2\r\n$7\r\nHGETALL\r\n$4\r\nhash\r\n").await;
     assert!(response.contains("field1"));
     assert!(response.contains("value1"));
     assert!(response.contains("field2"));
     assert!(response.contains("value2"));
-
+    
     // Test HLEN
     let response = send_command(&mut stream, "*2\r\n$4\r\nHLEN\r\n$4\r\nhash\r\n").await;
     assert!(response.contains("3"));
-
+    
     // Test HEXISTS
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$6\r\nfield1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$6\r\nfield1\r\n").await;
     assert!(response.contains("1"));
-
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$7\r\nnoexist\r\n",
-    )
-    .await;
+    
+    let response = send_command(&mut stream, "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$7\r\nnoexist\r\n").await;
     assert!(response.contains("0"));
-
+    
     // Test HDEL
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$4\r\nHDEL\r\n$4\r\nhash\r\n$6\r\nfield1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$4\r\nHDEL\r\n$4\r\nhash\r\n$6\r\nfield1\r\n").await;
     assert!(response.contains("1"));
-
+    
     // Test HKEYS
     let response = send_command(&mut stream, "*2\r\n$5\r\nHKEYS\r\n$4\r\nhash\r\n").await;
     assert!(response.contains("field2"));
     assert!(response.contains("field3"));
     assert!(!response.contains("field1")); // Should be deleted
-
+    
     // Test HVALS
     let response = send_command(&mut stream, "*2\r\n$5\r\nHVALS\r\n$4\r\nhash\r\n").await;
     assert!(response.contains("value2"));
@@ -250,50 +233,46 @@ async fn test_hash_operations() {
 #[tokio::test]
 async fn test_expiration() {
     let (mut server, port) = start_test_server("expiration").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test SETEX (expire in 1 second)
-    let response = send_command(
-        &mut stream,
-        "*5\r\n$3\r\nSET\r\n$6\r\nexpkey\r\n$5\r\nvalue\r\n$2\r\nEX\r\n$1\r\n1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*5\r\n$3\r\nSET\r\n$6\r\nexpkey\r\n$5\r\nvalue\r\n$2\r\nEX\r\n$1\r\n1\r\n").await;
     assert!(response.contains("OK"));
-
+    
     // Test TTL
     let response = send_command(&mut stream, "*2\r\n$3\r\nTTL\r\n$6\r\nexpkey\r\n").await;
     assert!(response.contains("1") || response.contains("0")); // Should be 1 or 0 seconds
-
+    
     // Test EXISTS
     let response = send_command(&mut stream, "*2\r\n$6\r\nEXISTS\r\n$6\r\nexpkey\r\n").await;
     assert!(response.contains("1"));
-
+    
     // Wait for expiration
     sleep(Duration::from_millis(1100)).await;
-
+    
     // Test GET after expiration
     let response = send_command(&mut stream, "*2\r\n$3\r\nGET\r\n$6\r\nexpkey\r\n").await;
     assert!(response.contains("$-1")); // Should be NULL
-
+    
     // Test TTL after expiration
     let response = send_command(&mut stream, "*2\r\n$3\r\nTTL\r\n$6\r\nexpkey\r\n").await;
     assert!(response.contains("-2")); // Key doesn't exist
-
+    
     // Test EXISTS after expiration
     let response = send_command(&mut stream, "*2\r\n$6\r\nEXISTS\r\n$6\r\nexpkey\r\n").await;
     assert!(response.contains("0"));
@@ -302,37 +281,33 @@ async fn test_expiration() {
 #[tokio::test]
 async fn test_scan_operations() {
     let (mut server, port) = start_test_server("scan").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Set up test data
     for i in 0..5 {
         let cmd = format!("*3\r\n$3\r\nSET\r\n$4\r\nkey{}\r\n$6\r\nvalue{}\r\n", i, i);
         send_command(&mut stream, &cmd).await;
     }
-
+    
     // Test SCAN
-    let response = send_command(
-        &mut stream,
-        "*6\r\n$4\r\nSCAN\r\n$1\r\n0\r\n$5\r\nMATCH\r\n$1\r\n*\r\n$5\r\nCOUNT\r\n$2\r\n10\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*6\r\n$4\r\nSCAN\r\n$1\r\n0\r\n$5\r\nMATCH\r\n$1\r\n*\r\n$5\r\nCOUNT\r\n$2\r\n10\r\n").await;
     assert!(response.contains("key"));
-
+    
     // Test KEYS
     let response = send_command(&mut stream, "*2\r\n$4\r\nKEYS\r\n$1\r\n*\r\n").await;
     assert!(response.contains("key0"));
@@ -342,32 +317,29 @@ async fn test_scan_operations() {
 #[tokio::test]
 async fn test_hscan_operations() {
     let (mut server, port) = start_test_server("hscan").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Set up hash data
     for i in 0..3 {
-        let cmd = format!(
-            "*4\r\n$4\r\nHSET\r\n$8\r\ntesthash\r\n$6\r\nfield{}\r\n$6\r\nvalue{}\r\n",
-            i, i
-        );
+        let cmd = format!("*4\r\n$4\r\nHSET\r\n$8\r\ntesthash\r\n$6\r\nfield{}\r\n$6\r\nvalue{}\r\n", i, i);
         send_command(&mut stream, &cmd).await;
     }
-
+    
     // Test HSCAN
     let response = send_command(&mut stream, "*7\r\n$5\r\nHSCAN\r\n$8\r\ntesthash\r\n$1\r\n0\r\n$5\r\nMATCH\r\n$1\r\n*\r\n$5\r\nCOUNT\r\n$2\r\n10\r\n").await;
     assert!(response.contains("field"));
@@ -377,50 +349,42 @@ async fn test_hscan_operations() {
 #[tokio::test]
 async fn test_transaction_operations() {
     let (mut server, port) = start_test_server("transaction").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test MULTI
     let response = send_command(&mut stream, "*1\r\n$5\r\nMULTI\r\n").await;
     assert!(response.contains("OK"));
-
+    
     // Test queued commands
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$3\r\nSET\r\n$4\r\nkey1\r\n$6\r\nvalue1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$3\r\nSET\r\n$4\r\nkey1\r\n$6\r\nvalue1\r\n").await;
     assert!(response.contains("QUEUED"));
-
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$3\r\nSET\r\n$4\r\nkey2\r\n$6\r\nvalue2\r\n",
-    )
-    .await;
+    
+    let response = send_command(&mut stream, "*3\r\n$3\r\nSET\r\n$4\r\nkey2\r\n$6\r\nvalue2\r\n").await;
     assert!(response.contains("QUEUED"));
-
+    
     // Test EXEC
     let response = send_command(&mut stream, "*1\r\n$4\r\nEXEC\r\n").await;
     assert!(response.contains("OK")); // Should contain results of executed commands
-
+    
     // Verify commands were executed
     let response = send_command(&mut stream, "*2\r\n$3\r\nGET\r\n$4\r\nkey1\r\n").await;
     assert!(response.contains("value1"));
-
+    
     let response = send_command(&mut stream, "*2\r\n$3\r\nGET\r\n$4\r\nkey2\r\n").await;
     assert!(response.contains("value2"));
 }
@@ -428,39 +392,35 @@ async fn test_transaction_operations() {
 #[tokio::test]
 async fn test_discard_transaction() {
     let (mut server, port) = start_test_server("discard").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test MULTI
     let response = send_command(&mut stream, "*1\r\n$5\r\nMULTI\r\n").await;
     assert!(response.contains("OK"));
-
+    
     // Test queued command
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$3\r\nSET\r\n$7\r\ndiscard\r\n$5\r\nvalue\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$3\r\nSET\r\n$7\r\ndiscard\r\n$5\r\nvalue\r\n").await;
     assert!(response.contains("QUEUED"));
-
+    
     // Test DISCARD
     let response = send_command(&mut stream, "*1\r\n$7\r\nDISCARD\r\n").await;
     assert!(response.contains("OK"));
-
+    
     // Verify command was not executed
     let response = send_command(&mut stream, "*2\r\n$3\r\nGET\r\n$7\r\ndiscard\r\n").await;
     assert!(response.contains("$-1")); // Should be NULL
@@ -469,41 +429,33 @@ async fn test_discard_transaction() {
 #[tokio::test]
 async fn test_type_command() {
     let (mut server, port) = start_test_server("type").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test string type
-    send_command(
-        &mut stream,
-        "*3\r\n$3\r\nSET\r\n$6\r\nstring\r\n$5\r\nvalue\r\n",
-    )
-    .await;
+    send_command(&mut stream, "*3\r\n$3\r\nSET\r\n$6\r\nstring\r\n$5\r\nvalue\r\n").await;
     let response = send_command(&mut stream, "*2\r\n$4\r\nTYPE\r\n$6\r\nstring\r\n").await;
     assert!(response.contains("string"));
-
+    
     // Test hash type
-    send_command(
-        &mut stream,
-        "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$5\r\nfield\r\n$5\r\nvalue\r\n",
-    )
-    .await;
+    send_command(&mut stream, "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$5\r\nfield\r\n$5\r\nvalue\r\n").await;
     let response = send_command(&mut stream, "*2\r\n$4\r\nTYPE\r\n$4\r\nhash\r\n").await;
     assert!(response.contains("hash"));
-
+    
     // Test non-existent key
     let response = send_command(&mut stream, "*2\r\n$4\r\nTYPE\r\n$7\r\nnoexist\r\n").await;
     assert!(response.contains("none"));
@@ -512,38 +464,30 @@ async fn test_type_command() {
 #[tokio::test]
 async fn test_config_commands() {
     let (mut server, port) = start_test_server("config").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test CONFIG GET databases
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$6\r\nCONFIG\r\n$3\r\nGET\r\n$9\r\ndatabases\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$6\r\nCONFIG\r\n$3\r\nGET\r\n$9\r\ndatabases\r\n").await;
     assert!(response.contains("databases"));
     assert!(response.contains("16"));
-
+    
     // Test CONFIG GET dir
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$6\r\nCONFIG\r\n$3\r\nGET\r\n$3\r\ndir\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$6\r\nCONFIG\r\n$3\r\nGET\r\n$3\r\ndir\r\n").await;
     assert!(response.contains("dir"));
     assert!(response.contains("/tmp/herodb_test_config"));
 }
@@ -551,27 +495,27 @@ async fn test_config_commands() {
 #[tokio::test]
 async fn test_info_command() {
     let (mut server, port) = start_test_server("info").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test INFO
     let response = send_command(&mut stream, "*1\r\n$4\r\nINFO\r\n").await;
     assert!(response.contains("redis_version"));
-
+    
     // Test INFO replication
     let response = send_command(&mut stream, "*2\r\n$4\r\nINFO\r\n$11\r\nreplication\r\n").await;
     assert!(response.contains("role:master"));
@@ -580,44 +524,36 @@ async fn test_info_command() {
 #[tokio::test]
 async fn test_error_handling() {
     let (mut server, port) = start_test_server("error").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test WRONGTYPE error - try to use hash command on string
-    send_command(
-        &mut stream,
-        "*3\r\n$3\r\nSET\r\n$6\r\nstring\r\n$5\r\nvalue\r\n",
-    )
-    .await;
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$4\r\nHGET\r\n$6\r\nstring\r\n$5\r\nfield\r\n",
-    )
-    .await;
+    send_command(&mut stream, "*3\r\n$3\r\nSET\r\n$6\r\nstring\r\n$5\r\nvalue\r\n").await;
+    let response = send_command(&mut stream, "*3\r\n$4\r\nHGET\r\n$6\r\nstring\r\n$5\r\nfield\r\n").await;
     assert!(response.contains("WRONGTYPE"));
-
+    
     // Test unknown command
     let response = send_command(&mut stream, "*1\r\n$7\r\nUNKNOWN\r\n").await;
     assert!(response.contains("unknown cmd") || response.contains("ERR"));
-
+    
     // Test EXEC without MULTI
     let response = send_command(&mut stream, "*1\r\n$4\r\nEXEC\r\n").await;
     assert!(response.contains("ERR"));
-
+    
     // Test DISCARD without MULTI
     let response = send_command(&mut stream, "*1\r\n$7\r\nDISCARD\r\n").await;
     assert!(response.contains("ERR"));
@@ -626,37 +562,29 @@ async fn test_error_handling() {
 #[tokio::test]
 async fn test_list_operations() {
     let (mut server, port) = start_test_server("list").await;
-
+    
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test LPUSH
-    let response = send_command(
-        &mut stream,
-        "*4\r\n$5\r\nLPUSH\r\n$4\r\nlist\r\n$1\r\na\r\n$1\r\nb\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*4\r\n$5\r\nLPUSH\r\n$4\r\nlist\r\n$1\r\na\r\n$1\r\nb\r\n").await;
     assert!(response.contains("2")); // 2 elements
-
+    
     // Test RPUSH
-    let response = send_command(
-        &mut stream,
-        "*4\r\n$5\r\nRPUSH\r\n$4\r\nlist\r\n$1\r\nc\r\n$1\r\nd\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*4\r\n$5\r\nRPUSH\r\n$4\r\nlist\r\n$1\r\nc\r\n$1\r\nd\r\n").await;
     assert!(response.contains("4")); // 4 elements
 
     // Test LLEN
@@ -664,52 +592,29 @@ async fn test_list_operations() {
     assert!(response.contains("4"));
 
     // Test LRANGE
-    let response = send_command(
-        &mut stream,
-        "*4\r\n$6\r\nLRANGE\r\n$4\r\nlist\r\n$1\r\n0\r\n$2\r\n-1\r\n",
-    )
-    .await;
-    assert_eq!(
-        response,
-        "*4\r\n$1\r\nb\r\n$1\r\na\r\n$1\r\nc\r\n$1\r\nd\r\n"
-    );
-
+    let response = send_command(&mut stream, "*4\r\n$6\r\nLRANGE\r\n$4\r\nlist\r\n$1\r\n0\r\n$2\r\n-1\r\n").await;
+    assert_eq!(response, "*4\r\n$1\r\nb\r\n$1\r\na\r\n$1\r\nc\r\n$1\r\nd\r\n");
+    
     // Test LINDEX
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$6\r\nLINDEX\r\n$4\r\nlist\r\n$1\r\n0\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$6\r\nLINDEX\r\n$4\r\nlist\r\n$1\r\n0\r\n").await;
     assert_eq!(response, "$1\r\nb\r\n");
-
+    
     // Test LPOP
     let response = send_command(&mut stream, "*2\r\n$4\r\nLPOP\r\n$4\r\nlist\r\n").await;
     assert_eq!(response, "$1\r\nb\r\n");
-
+    
     // Test RPOP
     let response = send_command(&mut stream, "*2\r\n$4\r\nRPOP\r\n$4\r\nlist\r\n").await;
     assert_eq!(response, "$1\r\nd\r\n");
 
     // Test LREM
-    send_command(
-        &mut stream,
-        "*3\r\n$5\r\nLPUSH\r\n$4\r\nlist\r\n$1\r\na\r\n",
-    )
-    .await; // list is now a, c, a
-    let response = send_command(
-        &mut stream,
-        "*4\r\n$4\r\nLREM\r\n$4\r\nlist\r\n$1\r\n1\r\n$1\r\na\r\n",
-    )
-    .await;
+    send_command(&mut stream, "*3\r\n$5\r\nLPUSH\r\n$4\r\nlist\r\n$1\r\na\r\n").await; // list is now a, c, a
+    let response = send_command(&mut stream, "*4\r\n$4\r\nLREM\r\n$4\r\nlist\r\n$1\r\n1\r\n$1\r\na\r\n").await;
     assert!(response.contains("1"));
 
     // Test LTRIM
-    let response = send_command(
-        &mut stream,
-        "*4\r\n$5\r\nLTRIM\r\n$4\r\nlist\r\n$1\r\n0\r\n$1\r\n0\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*4\r\n$5\r\nLTRIM\r\n$4\r\nlist\r\n$1\r\n0\r\n$1\r\n0\r\n").await;
     assert!(response.contains("OK"));
     let response = send_command(&mut stream, "*2\r\n$4\r\nLLEN\r\n$4\r\nlist\r\n").await;
     assert!(response.contains("1"));
-}
+}

tests/rpc_tests.rs

@@ -0,0 +1,85 @@
+use herodb::rpc::{BackendType, DatabaseConfig};
+use herodb::admin_meta;
+use herodb::options::BackendType as OptionsBackendType;
+
+#[tokio::test]
+async fn test_rpc_server_basic() {
+    // This test would require starting the RPC server in a separate thread
+    // For now, we'll just test that the types compile correctly
+
+    // Test serialization of types
+    let backend = BackendType::Redb;
+    let config = DatabaseConfig {
+        name: Some("test_db".to_string()),
+        storage_path: Some("/tmp/test".to_string()),
+        max_size: Some(1024 * 1024),
+        redis_version: Some("7.0".to_string()),
+    };
+
+    let backend_json = serde_json::to_string(&backend).unwrap();
+    let config_json = serde_json::to_string(&config).unwrap();
+
+    assert_eq!(backend_json, "\"Redb\"");
+    assert!(config_json.contains("test_db"));
+}
+
+#[tokio::test]
+async fn test_database_config_serialization() {
+    let config = DatabaseConfig {
+        name: Some("my_db".to_string()),
+        storage_path: None,
+        max_size: Some(1000000),
+        redis_version: Some("7.0".to_string()),
+    };
+
+    let json = serde_json::to_value(&config).unwrap();
+    assert_eq!(json["name"], "my_db");
+    assert_eq!(json["max_size"], 1000000);
+    assert_eq!(json["redis_version"], "7.0");
+}
+
+#[tokio::test]
+async fn test_backend_type_serialization() {
+    // Test that both Redb and Sled backends serialize correctly
+    let redb_backend = BackendType::Redb;
+    let sled_backend = BackendType::Sled;
+
+    let redb_json = serde_json::to_string(&redb_backend).unwrap();
+    let sled_json = serde_json::to_string(&sled_backend).unwrap();
+
+    assert_eq!(redb_json, "\"Redb\"");
+    assert_eq!(sled_json, "\"Sled\"");
+
+    // Test deserialization
+    let redb_deserialized: BackendType = serde_json::from_str(&redb_json).unwrap();
+    let sled_deserialized: BackendType = serde_json::from_str(&sled_json).unwrap();
+
+    assert!(matches!(redb_deserialized, BackendType::Redb));
+    assert!(matches!(sled_deserialized, BackendType::Sled));
+}
+
+#[tokio::test]
+async fn test_database_name_persistence() {
+    let base_dir = "/tmp/test_db_name_persistence";
+    let admin_secret = "test-admin-secret";
+    let backend = OptionsBackendType::Redb;
+    let db_id = 1;
+    let test_name = "test-database-name";
+
+    // Clean up any existing test data
+    let _ = std::fs::remove_dir_all(base_dir);
+
+    // Set the database name
+    admin_meta::set_database_name(base_dir, backend.clone(), admin_secret, db_id, test_name)
+        .expect("Failed to set database name");
+
+    // Retrieve the database name
+    let retrieved_name = admin_meta::get_database_name(base_dir, backend, admin_secret, db_id)
+        .expect("Failed to get database name");
+
+    // Verify the name matches
+    assert_eq!(retrieved_name, Some(test_name.to_string()));
+
+    // Clean up
+    let _ = std::fs::remove_dir_all(base_dir);
+}

tests/simple_integration_test.rs

@@ -1,23 +1,23 @@
-use herodb::{options::DBOption, server::Server};
+use herodb::{server::Server, options::DBOption};
 use std::time::Duration;
+use tokio::time::sleep;
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::TcpStream;
-use tokio::time::sleep;
 
 // Helper function to start a test server with clean data directory
 async fn start_test_server(test_name: &str) -> (Server, u16) {
     use std::sync::atomic::{AtomicU16, Ordering};
     static PORT_COUNTER: AtomicU16 = AtomicU16::new(17000);
-
+    
     // Get a unique port for this test
     let port = PORT_COUNTER.fetch_add(1, Ordering::SeqCst);
-
+    
     let test_dir = format!("/tmp/herodb_test_{}", test_name);
-
+    
     // Clean up any existing test data
     let _ = std::fs::remove_dir_all(&test_dir);
     std::fs::create_dir_all(&test_dir).unwrap();
-
+    
     let option = DBOption {
         dir: test_dir,
         port,
@@ -25,20 +25,26 @@ async fn start_test_server(test_name: &str) -> (Server, u16) {
         encrypt: false,
         encryption_key: None,
         backend: herodb::options::BackendType::Redb,
+        admin_secret: "test-admin".to_string(),
     };
-
+    
     let server = Server::new(option).await;
     (server, port)
 }
 
 // Helper function to send Redis command and get response
 async fn send_redis_command(port: u16, command: &str) -> String {
-    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port))
-        .await
-        .unwrap();
-    stream.write_all(command.as_bytes()).await.unwrap();
-
+    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port)).await.unwrap();
+    
+    // Acquire ReadWrite permissions on this new connection
+    let handshake = "*4\r\n$6\r\nSELECT\r\n$1\r\n0\r\n$3\r\nKEY\r\n$10\r\ntest-admin\r\n";
+    stream.write_all(handshake.as_bytes()).await.unwrap();
     let mut buffer = [0; 1024];
+    let _ = stream.read(&mut buffer).await.unwrap(); // Read and ignore the OK for handshake
+    
+    // Now send the intended command
+    stream.write_all(command.as_bytes()).await.unwrap();
+    
     let n = stream.read(&mut buffer).await.unwrap();
     String::from_utf8_lossy(&buffer[..n]).to_string()
 }
@@ -46,13 +52,13 @@ async fn send_redis_command(port: u16, command: &str) -> String {
 #[tokio::test]
 async fn test_basic_redis_functionality() {
     let (mut server, port) = start_test_server("basic").await;
-
+    
     // Start server in background with timeout
     let server_handle = tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         // Accept only a few connections for testing
         for _ in 0..10 {
             if let Ok((stream, _)) = listener.accept().await {
@@ -60,79 +66,68 @@ async fn test_basic_redis_functionality() {
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     // Test PING
     let response = send_redis_command(port, "*1\r\n$4\r\nPING\r\n").await;
     assert!(response.contains("PONG"));
-
+    
     // Test SET
-    let response =
-        send_redis_command(port, "*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n").await;
+    let response = send_redis_command(port, "*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n").await;
     assert!(response.contains("OK"));
-
+    
     // Test GET
     let response = send_redis_command(port, "*2\r\n$3\r\nGET\r\n$3\r\nkey\r\n").await;
     assert!(response.contains("value"));
-
+    
     // Test HSET
-    let response = send_redis_command(
-        port,
-        "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$5\r\nfield\r\n$5\r\nvalue\r\n",
-    )
-    .await;
+    let response = send_redis_command(port, "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$5\r\nfield\r\n$5\r\nvalue\r\n").await;
     assert!(response.contains("1"));
-
+    
     // Test HGET
-    let response =
-        send_redis_command(port, "*3\r\n$4\r\nHGET\r\n$4\r\nhash\r\n$5\r\nfield\r\n").await;
+    let response = send_redis_command(port, "*3\r\n$4\r\nHGET\r\n$4\r\nhash\r\n$5\r\nfield\r\n").await;
     assert!(response.contains("value"));
-
+    
     // Test EXISTS
     let response = send_redis_command(port, "*2\r\n$6\r\nEXISTS\r\n$3\r\nkey\r\n").await;
     assert!(response.contains("1"));
-
+    
     // Test TTL
     let response = send_redis_command(port, "*2\r\n$3\r\nTTL\r\n$3\r\nkey\r\n").await;
     assert!(response.contains("-1")); // No expiration
-
+    
     // Test TYPE
     let response = send_redis_command(port, "*2\r\n$4\r\nTYPE\r\n$3\r\nkey\r\n").await;
     assert!(response.contains("string"));
-
+    
     // Test QUIT to close connection gracefully
-    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port))
-        .await
-        .unwrap();
-    stream
-        .write_all("*1\r\n$4\r\nQUIT\r\n".as_bytes())
-        .await
-        .unwrap();
+    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port)).await.unwrap();
+    stream.write_all("*1\r\n$4\r\nQUIT\r\n".as_bytes()).await.unwrap();
     let mut buffer = [0; 1024];
     let n = stream.read(&mut buffer).await.unwrap();
     let response = String::from_utf8_lossy(&buffer[..n]);
     assert!(response.contains("OK"));
-
+    
     // Ensure the stream is closed
     stream.shutdown().await.unwrap();
 
     // Stop the server
     server_handle.abort();
-
+    
     println!("✅ All basic Redis functionality tests passed!");
 }
 
 #[tokio::test]
 async fn test_hash_operations() {
     let (mut server, port) = start_test_server("hash_ops").await;
-
+    
     // Start server in background with timeout
     let server_handle = tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         // Accept only a few connections for testing
         for _ in 0..5 {
             if let Ok((stream, _)) = listener.accept().await {
@@ -140,57 +135,53 @@ async fn test_hash_operations() {
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
+    
     // Test HSET multiple fields
     let response = send_redis_command(port, "*6\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n$6\r\nfield2\r\n$6\r\nvalue2\r\n").await;
     assert!(response.contains("2")); // 2 new fields
-
+    
     // Test HGETALL
     let response = send_redis_command(port, "*2\r\n$7\r\nHGETALL\r\n$4\r\nhash\r\n").await;
     assert!(response.contains("field1"));
     assert!(response.contains("value1"));
     assert!(response.contains("field2"));
     assert!(response.contains("value2"));
-
+    
     // Test HEXISTS
-    let response = send_redis_command(
-        port,
-        "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$6\r\nfield1\r\n",
-    )
-    .await;
+    let response = send_redis_command(port, "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$6\r\nfield1\r\n").await;
     assert!(response.contains("1"));
-
+    
     // Test HLEN
     let response = send_redis_command(port, "*2\r\n$4\r\nHLEN\r\n$4\r\nhash\r\n").await;
     assert!(response.contains("2"));
-
+    
     // Test HSCAN
     let response = send_redis_command(port, "*7\r\n$5\r\nHSCAN\r\n$4\r\nhash\r\n$1\r\n0\r\n$5\r\nMATCH\r\n$1\r\n*\r\n$5\r\nCOUNT\r\n$2\r\n10\r\n").await;
     assert!(response.contains("field1"));
     assert!(response.contains("value1"));
     assert!(response.contains("field2"));
     assert!(response.contains("value2"));
-
+    
     // Stop the server
     // For hash operations, we don't have a persistent stream, so we'll just abort the server.
     // The server should handle closing its connections.
     server_handle.abort();
-
+    
     println!("✅ All hash operations tests passed!");
 }
 
 #[tokio::test]
 async fn test_transaction_operations() {
     let (mut server, port) = start_test_server("transactions").await;
-
+    
     // Start server in background with timeout
     let server_handle = tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         // Accept only a few connections for testing
         for _ in 0..5 {
             if let Ok((stream, _)) = listener.accept().await {
@@ -198,69 +189,56 @@ async fn test_transaction_operations() {
             }
         }
     });
-
+    
     sleep(Duration::from_millis(100)).await;
-
-    // Use a single connection for the transaction
-    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port))
-        .await
-        .unwrap();
-
-    // Test MULTI
-    stream
-        .write_all("*1\r\n$5\r\nMULTI\r\n".as_bytes())
-        .await
-        .unwrap();
+    
+     // Use a single connection for the transaction
+    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", port)).await.unwrap();
+    
+    // Acquire write permissions for this connection
+    let handshake = "*4\r\n$6\r\nSELECT\r\n$1\r\n0\r\n$3\r\nKEY\r\n$10\r\ntest-admin\r\n";
+    stream.write_all(handshake.as_bytes()).await.unwrap();
     let mut buffer = [0; 1024];
     let n = stream.read(&mut buffer).await.unwrap();
+    let resp = String::from_utf8_lossy(&buffer[..n]);
+    assert!(resp.contains("OK"));
+    
+    // Test MULTI
+    stream.write_all("*1\r\n$5\r\nMULTI\r\n".as_bytes()).await.unwrap();
+    let n = stream.read(&mut buffer).await.unwrap();
     let response = String::from_utf8_lossy(&buffer[..n]);
     assert!(response.contains("OK"));
-
+    
     // Test queued commands
-    stream
-        .write_all("*3\r\n$3\r\nSET\r\n$4\r\nkey1\r\n$6\r\nvalue1\r\n".as_bytes())
-        .await
-        .unwrap();
+    stream.write_all("*3\r\n$3\r\nSET\r\n$4\r\nkey1\r\n$6\r\nvalue1\r\n".as_bytes()).await.unwrap();
     let n = stream.read(&mut buffer).await.unwrap();
     let response = String::from_utf8_lossy(&buffer[..n]);
     assert!(response.contains("QUEUED"));
-
-    stream
-        .write_all("*3\r\n$3\r\nSET\r\n$4\r\nkey2\r\n$6\r\nvalue2\r\n".as_bytes())
-        .await
-        .unwrap();
+    
+    stream.write_all("*3\r\n$3\r\nSET\r\n$4\r\nkey2\r\n$6\r\nvalue2\r\n".as_bytes()).await.unwrap();
     let n = stream.read(&mut buffer).await.unwrap();
     let response = String::from_utf8_lossy(&buffer[..n]);
     assert!(response.contains("QUEUED"));
-
+    
     // Test EXEC
-    stream
-        .write_all("*1\r\n$4\r\nEXEC\r\n".as_bytes())
-        .await
-        .unwrap();
+    stream.write_all("*1\r\n$4\r\nEXEC\r\n".as_bytes()).await.unwrap();
     let n = stream.read(&mut buffer).await.unwrap();
     let response = String::from_utf8_lossy(&buffer[..n]);
     assert!(response.contains("OK")); // Should contain array of OK responses
-
+    
     // Verify commands were executed
-    stream
-        .write_all("*2\r\n$3\r\nGET\r\n$4\r\nkey1\r\n".as_bytes())
-        .await
-        .unwrap();
+    stream.write_all("*2\r\n$3\r\nGET\r\n$4\r\nkey1\r\n".as_bytes()).await.unwrap();
     let n = stream.read(&mut buffer).await.unwrap();
     let response = String::from_utf8_lossy(&buffer[..n]);
     assert!(response.contains("value1"));
-
-    stream
-        .write_all("*2\r\n$3\r\nGET\r\n$4\r\nkey2\r\n".as_bytes())
-        .await
-        .unwrap();
+    
+    stream.write_all("*2\r\n$3\r\nGET\r\n$4\r\nkey2\r\n".as_bytes()).await.unwrap();
     let n = stream.read(&mut buffer).await.unwrap();
     let response = String::from_utf8_lossy(&buffer[..n]);
     assert!(response.contains("value2"));
 
     // Stop the server
     server_handle.abort();
-
+    
     println!("✅ All transaction operations tests passed!");
-}
+}

tests/simple_redis_test.rs

@@ -1,4 +1,4 @@
-use herodb::{options::DBOption, server::Server};
+use herodb::{server::Server, options::DBOption};
 use std::time::Duration;
 use tokio::io::{AsyncReadExt, AsyncWriteExt};
 use tokio::net::TcpStream;
@@ -8,14 +8,14 @@ use tokio::time::sleep;
 async fn start_test_server(test_name: &str) -> (Server, u16) {
     use std::sync::atomic::{AtomicU16, Ordering};
     static PORT_COUNTER: AtomicU16 = AtomicU16::new(16500);
-
+    
     let port = PORT_COUNTER.fetch_add(1, Ordering::SeqCst);
     let test_dir = format!("/tmp/herodb_simple_test_{}", test_name);
-
+    
     // Clean up any existing test data
     let _ = std::fs::remove_dir_all(&test_dir);
     std::fs::create_dir_all(&test_dir).unwrap();
-
+    
     let option = DBOption {
         dir: test_dir,
         port,
@@ -23,8 +23,9 @@ async fn start_test_server(test_name: &str) -> (Server, u16) {
         encrypt: false,
         encryption_key: None,
         backend: herodb::options::BackendType::Redb,
+        admin_secret: "test-admin".to_string(),
     };
-
+    
     let server = Server::new(option).await;
     (server, port)
 }
@@ -32,18 +33,28 @@ async fn start_test_server(test_name: &str) -> (Server, u16) {
 // Helper function to send command and get response
 async fn send_command(stream: &mut TcpStream, command: &str) -> String {
     stream.write_all(command.as_bytes()).await.unwrap();
-
+    
     let mut buffer = [0; 1024];
     let n = stream.read(&mut buffer).await.unwrap();
     String::from_utf8_lossy(&buffer[..n]).to_string()
 }
 
-// Helper function to connect to the test server
+ // Helper function to connect to the test server
 async fn connect_to_server(port: u16) -> TcpStream {
     let mut attempts = 0;
     loop {
         match TcpStream::connect(format!("127.0.0.1:{}", port)).await {
-            Ok(stream) => return stream,
+            Ok(mut stream) => {
+                // Acquire ReadWrite permissions for this connection
+                let resp = send_command(
+                    &mut stream,
+                    "*4\r\n$6\r\nSELECT\r\n$1\r\n0\r\n$3\r\nKEY\r\n$10\r\ntest-admin\r\n",
+                ).await;
+                if !resp.contains("OK") {
+                    panic!("Failed to acquire write permissions via SELECT 0 KEY test-admin: {}", resp);
+                }
+                return stream;
+            }
             Err(_) if attempts < 10 => {
                 attempts += 1;
                 sleep(Duration::from_millis(100)).await;
@@ -56,22 +67,22 @@ async fn connect_to_server(port: u16) -> TcpStream {
 #[tokio::test]
 async fn test_basic_ping_simple() {
     let (mut server, port) = start_test_server("ping").await;
-
+    
     // Start server in background
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(200)).await;
-
+    
     let mut stream = connect_to_server(port).await;
     let response = send_command(&mut stream, "*1\r\n$4\r\nPING\r\n").await;
     assert!(response.contains("PONG"));
@@ -80,43 +91,38 @@ async fn test_basic_ping_simple() {
 #[tokio::test]
 async fn test_hset_clean_db() {
     let (mut server, port) = start_test_server("hset_clean").await;
-
+    
     // Start server in background
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(200)).await;
-
+    
     let mut stream = connect_to_server(port).await;
 
-    // Test HSET - should return 1 for new field
-    let response = send_command(
-        &mut stream,
-        "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n",
-    )
-    .await;
-    println!("HSET response: {}", response);
-    assert!(
-        response.contains("1"),
-        "Expected HSET to return 1, got: {}",
-        response
-    );
+    // Ensure clean DB state (admin DB 0 may be shared due to global singleton)
+    let flush = send_command(&mut stream, "*1\r\n$7\r\nFLUSHDB\r\n").await;
+    assert!(flush.contains("OK"), "Failed to FLUSHDB: {}", flush);
 
+    // Test HSET - should return 1 for new field (use a unique key name to avoid collisions)
+    let key = "hash_clean";
+    let hset_cmd = format!("*4\r\n$4\r\nHSET\r\n${}\r\n{}\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n", key.len(), key);
+    let response = send_command(&mut stream, &hset_cmd).await;
+    println!("HSET response: {}", response);
+    assert!(response.contains("1"), "Expected HSET to return 1, got: {}", response);
+    
     // Test HGET
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$4\r\nHGET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n",
-    )
-    .await;
+    let hget_cmd = format!("*3\r\n$4\r\nHGET\r\n${}\r\n{}\r\n$6\r\nfield1\r\n", key.len(), key);
+    let response = send_command(&mut stream, &hget_cmd).await;
     println!("HGET response: {}", response);
     assert!(response.contains("value1"));
 }
@@ -124,101 +130,73 @@ async fn test_hset_clean_db() {
 #[tokio::test]
 async fn test_type_command_simple() {
     let (mut server, port) = start_test_server("type").await;
-
+    
     // Start server in background
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(200)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Test string type
-    send_command(
-        &mut stream,
-        "*3\r\n$3\r\nSET\r\n$6\r\nstring\r\n$5\r\nvalue\r\n",
-    )
-    .await;
+    send_command(&mut stream, "*3\r\n$3\r\nSET\r\n$6\r\nstring\r\n$5\r\nvalue\r\n").await;
     let response = send_command(&mut stream, "*2\r\n$4\r\nTYPE\r\n$6\r\nstring\r\n").await;
     println!("TYPE string response: {}", response);
     assert!(response.contains("string"));
-
+    
     // Test hash type
-    send_command(
-        &mut stream,
-        "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$5\r\nfield\r\n$5\r\nvalue\r\n",
-    )
-    .await;
+    send_command(&mut stream, "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$5\r\nfield\r\n$5\r\nvalue\r\n").await;
     let response = send_command(&mut stream, "*2\r\n$4\r\nTYPE\r\n$4\r\nhash\r\n").await;
     println!("TYPE hash response: {}", response);
     assert!(response.contains("hash"));
-
+    
     // Test non-existent key
     let response = send_command(&mut stream, "*2\r\n$4\r\nTYPE\r\n$7\r\nnoexist\r\n").await;
     println!("TYPE noexist response: {}", response);
-    assert!(
-        response.contains("none"),
-        "Expected 'none' for non-existent key, got: {}",
-        response
-    );
+    assert!(response.contains("none"), "Expected 'none' for non-existent key, got: {}", response);
 }
 
 #[tokio::test]
 async fn test_hexists_simple() {
     let (mut server, port) = start_test_server("hexists").await;
-
+    
     // Start server in background
     tokio::spawn(async move {
         let listener = tokio::net::TcpListener::bind(format!("127.0.0.1:{}", port))
             .await
             .unwrap();
-
+        
         loop {
             if let Ok((stream, _)) = listener.accept().await {
                 let _ = server.handle(stream).await;
             }
         }
     });
-
+    
     sleep(Duration::from_millis(200)).await;
-
+    
     let mut stream = connect_to_server(port).await;
-
+    
     // Set up hash
-    send_command(
-        &mut stream,
-        "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n",
-    )
-    .await;
-
+    send_command(&mut stream, "*4\r\n$4\r\nHSET\r\n$4\r\nhash\r\n$6\r\nfield1\r\n$6\r\nvalue1\r\n").await;
+    
     // Test HEXISTS for existing field
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$6\r\nfield1\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$6\r\nfield1\r\n").await;
     println!("HEXISTS existing field response: {}", response);
     assert!(response.contains("1"));
-
+    
     // Test HEXISTS for non-existent field
-    let response = send_command(
-        &mut stream,
-        "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$7\r\nnoexist\r\n",
-    )
-    .await;
+    let response = send_command(&mut stream, "*3\r\n$7\r\nHEXISTS\r\n$4\r\nhash\r\n$7\r\nnoexist\r\n").await;
     println!("HEXISTS non-existent field response: {}", response);
-    assert!(
-        response.contains("0"),
-        "Expected HEXISTS to return 0 for non-existent field, got: {}",
-        response
-    );
-}
+    assert!(response.contains("0"), "Expected HEXISTS to return 0 for non-existent field, got: {}", response);
+}

tests/usage_suite.rs

@@ -23,6 +23,7 @@ async fn start_test_server(test_name: &str) -> (Server, u16) {
         encrypt: false,
         encryption_key: None,
         backend: herodb::options::BackendType::Redb,
+        admin_secret: "test-admin".to_string(),
     };
 
     let server = Server::new(option).await;
@@ -61,7 +62,17 @@ async fn connect(port: u16) -> TcpStream {
     let mut attempts = 0;
     loop {
         match TcpStream::connect(format!("127.0.0.1:{}", port)).await {
-            Ok(s) => return s,
+            Ok(mut s) => {
+                // Acquire ReadWrite permissions for this connection using admin DB 0
+                let resp = send_cmd(&mut s, &["SELECT", "0", "KEY", "test-admin"]).await;
+                assert_contains(&resp, "OK", "SELECT 0 KEY test-admin handshake");
+
+                // Ensure clean slate per test on DB 0
+                let fl = send_cmd(&mut s, &["FLUSHDB"]).await;
+                assert_contains(&fl, "OK", "FLUSHDB after handshake");
+
+                return s;
+            }
             Err(_) if attempts < 30 => {
                 attempts += 1;
                 sleep(Duration::from_millis(100)).await;
@@ -246,9 +257,9 @@ async fn test_01_connection_and_info() {
     let getname = send_cmd(&mut s, &["CLIENT", "GETNAME"]).await;
     assert_contains(&getname, "myapp", "CLIENT GETNAME");
 
-    // SELECT db
-    let sel = send_cmd(&mut s, &["SELECT", "0"]).await;
-    assert_contains(&sel, "OK", "SELECT 0");
+    // SELECT db (requires key on DB 0)
+    let sel = send_cmd(&mut s, &["SELECT", "0", "KEY", "test-admin"]).await;
+    assert_contains(&sel, "OK", "SELECT 0 with key");
 
     // QUIT should close connection after sending OK
     let quit = send_cmd(&mut s, &["QUIT"]).await;
@@ -279,7 +290,11 @@ async fn test_02_strings_and_expiry() {
 
     let ex0 = send_cmd(&mut s, &["EXISTS", "user:1"]).await;
     assert_contains(&ex0, "0", "EXISTS after DEL");
-
+    
+    // DEL non-existent should return 0
+    let del0 = send_cmd(&mut s, &["DEL", "user:1"]).await;
+    assert_contains(&del0, "0", "DEL user:1 when not exists -> 0");
+    
     // INCR behavior
     let i1 = send_cmd(&mut s, &["INCR", "count"]).await;
     assert_contains(&i1, "1", "INCR new key -> 1");
@@ -325,11 +340,7 @@ async fn test_03_scan_and_keys() {
     let mut s = connect(port).await;
 
     for i in 0..5 {
-        let _ = send_cmd(
-            &mut s,
-            &["SET", &format!("key{}", i), &format!("value{}", i)],
-        )
-        .await;
+        let _ = send_cmd(&mut s, &["SET", &format!("key{}", i), &format!("value{}", i)]).await;
     }
 
     let scan = send_cmd(&mut s, &["SCAN", "0", "MATCH", "key*", "COUNT", "10"]).await;
@@ -362,11 +373,7 @@ async fn test_04_hashes_suite() {
     assert_contains(&h2, "2", "HSET added 2 new fields");
 
     // HMGET
-    let hmg = send_cmd(
-        &mut s,
-        &["HMGET", "profile:1", "name", "age", "city", "nope"],
-    )
-    .await;
+    let hmg = send_cmd(&mut s, &["HMGET", "profile:1", "name", "age", "city", "nope"]).await;
     assert_contains(&hmg, "alice", "HMGET name");
     assert_contains(&hmg, "30", "HMGET age");
     assert_contains(&hmg, "paris", "HMGET city");
@@ -400,11 +407,7 @@ async fn test_04_hashes_suite() {
     assert_contains(&hnx1, "1", "HSETNX new field -> 1");
 
     // HSCAN
-    let hscan = send_cmd(
-        &mut s,
-        &["HSCAN", "profile:1", "0", "MATCH", "n*", "COUNT", "10"],
-    )
-    .await;
+    let hscan = send_cmd(&mut s, &["HSCAN", "profile:1", "0", "MATCH", "n*", "COUNT", "10"]).await;
     assert_contains(&hscan, "name", "HSCAN matches fields starting with n");
     assert_contains(&hscan, "nickname", "HSCAN nickname present");
 
@@ -436,21 +439,13 @@ async fn test_05_lists_suite_including_blpop() {
     assert_eq_resp(&lidx, "$1\r\nb\r\n", "LINDEX q:jobs 0 should be b");
 
     let lr = send_cmd(&mut a, &["LRANGE", "q:jobs", "0", "-1"]).await;
-    assert_eq_resp(
-        &lr,
-        "*3\r\n$1\r\nb\r\n$1\r\na\r\n$1\r\nc\r\n",
-        "LRANGE q:jobs 0 -1 should be [b,a,c]",
-    );
+    assert_eq_resp(&lr, "*3\r\n$1\r\nb\r\n$1\r\na\r\n$1\r\nc\r\n", "LRANGE q:jobs 0 -1 should be [b,a,c]");
 
     // LTRIM
     let ltrim = send_cmd(&mut a, &["LTRIM", "q:jobs", "0", "1"]).await;
     assert_contains(&ltrim, "OK", "LTRIM OK");
     let lr_post = send_cmd(&mut a, &["LRANGE", "q:jobs", "0", "-1"]).await;
-    assert_eq_resp(
-        &lr_post,
-        "*2\r\n$1\r\nb\r\n$1\r\na\r\n",
-        "After LTRIM, list [b,a]",
-    );
+    assert_eq_resp(&lr_post, "*2\r\n$1\r\nb\r\n$1\r\na\r\n", "After LTRIM, list [b,a]");
 
     // LREM remove first occurrence of b
     let lrem = send_cmd(&mut a, &["LREM", "q:jobs", "1", "b"]).await;
@@ -464,11 +459,7 @@ async fn test_05_lists_suite_including_blpop() {
 
     // LPOP with count on empty -> []
     let lpop0 = send_cmd(&mut a, &["LPOP", "q:jobs", "2"]).await;
-    assert_eq_resp(
-        &lpop0,
-        "*0\r\n",
-        "LPOP with count on empty returns empty array",
-    );
+    assert_eq_resp(&lpop0, "*0\r\n", "LPOP with count on empty returns empty array");
 
     // BLPOP: block on one client, push from another
     let c1 = connect(port).await;
@@ -525,11 +516,11 @@ async fn test_07_age_stateless_suite() {
     let mut s = connect(port).await;
 
     // GENENC -> [recipient, identity]
-    let gen = send_cmd(&mut s, &["AGE", "GENENC"]).await;
+    let genenc = send_cmd(&mut s, &["AGE", "GENENC"]).await;
     assert!(
-        gen.starts_with("*2\r\n$"),
+        genenc.starts_with("*2\r\n$"),
         "AGE GENENC should return array [recipient, identity], got:\n{}",
-        gen
+        genenc
     );
 
     // Parse simple RESP array of two bulk strings to extract keys
@@ -537,14 +528,14 @@ async fn test_07_age_stateless_suite() {
         // naive parse for tests
         let mut lines = resp.lines();
         let _ = lines.next(); // *2
-                              // $len
+        // $len
         let _ = lines.next();
         let recip = lines.next().unwrap_or("").to_string();
         let _ = lines.next();
         let ident = lines.next().unwrap_or("").to_string();
         (recip, ident)
     }
-    let (recipient, identity) = parse_two_bulk_array(&gen);
+    let (recipient, identity) = parse_two_bulk_array(&genenc);
     assert!(
         recipient.starts_with("age1") && identity.starts_with("AGE-SECRET-KEY-1"),
         "Unexpected AGE key formats.\nrecipient: {}\nidentity: {}",
@@ -572,16 +563,8 @@ async fn test_07_age_stateless_suite() {
     let v_ok = send_cmd(&mut s, &["AGE", "VERIFY", &verify_pub, "msg", &sig_b64]).await;
     assert_contains(&v_ok, "1", "VERIFY should be 1 for valid signature");
 
-    let v_bad = send_cmd(
-        &mut s,
-        &["AGE", "VERIFY", &verify_pub, "tampered", &sig_b64],
-    )
-    .await;
-    assert_contains(
-        &v_bad,
-        "0",
-        "VERIFY should be 0 for invalid message/signature",
-    );
+    let v_bad = send_cmd(&mut s, &["AGE", "VERIFY", &verify_pub, "tampered", &sig_b64]).await;
+    assert_contains(&v_bad, "0", "VERIFY should be 0 for invalid message/signature");
 }
 
 #[tokio::test]
@@ -613,7 +596,7 @@ async fn test_08_age_persistent_named_suite() {
         skg
     );
 
-    let sig = send_cmd(&mut s, &["AGE", "SIGNNAME", "app1", "m"]).await;
+    let sig = send_cmd(&mut s, &["AGE", "SIGNNAME", "app1", "m"] ).await;
     let sig_b64 = extract_bulk_payload(&sig).expect("Failed to parse bulk payload from SIGNNAME");
     let v1 = send_cmd(&mut s, &["AGE", "VERIFYNAME", "app1", "m", &sig_b64]).await;
     assert_contains(&v1, "1", "VERIFYNAME valid => 1");
@@ -623,75 +606,66 @@ async fn test_08_age_persistent_named_suite() {
 
     // AGE LIST
     let lst = send_cmd(&mut s, &["AGE", "LIST"]).await;
-    assert_contains(&lst, "encpub", "AGE LIST label encpub");
+    // After flattening, LIST returns a flat array of managed key names
     assert_contains(&lst, "app1", "AGE LIST includes app1");
 }
 
 #[tokio::test]
 async fn test_10_expire_pexpire_persist() {
-    let (server, port) = start_test_server("expire_suite").await;
-    spawn_listener(server, port).await;
-    sleep(Duration::from_millis(150)).await;
+   let (server, port) = start_test_server("expire_suite").await;
+   spawn_listener(server, port).await;
+   sleep(Duration::from_millis(150)).await;
 
-    let mut s = connect(port).await;
+   let mut s = connect(port).await;
 
-    // EXPIRE: seconds
-    let _ = send_cmd(&mut s, &["SET", "exp:s", "v"]).await;
-    let ex = send_cmd(&mut s, &["EXPIRE", "exp:s", "1"]).await;
-    assert_contains(&ex, "1", "EXPIRE exp:s 1 -> 1 (applied)");
-    let ttl1 = send_cmd(&mut s, &["TTL", "exp:s"]).await;
-    assert!(
-        ttl1.contains("1") || ttl1.contains("0"),
-        "TTL exp:s should be 1 or 0, got: {}",
-        ttl1
-    );
-    sleep(Duration::from_millis(1100)).await;
-    let get_after = send_cmd(&mut s, &["GET", "exp:s"]).await;
-    assert_contains(&get_after, "$-1", "GET after expiry should be Null");
-    let ttl_after = send_cmd(&mut s, &["TTL", "exp:s"]).await;
-    assert_contains(&ttl_after, "-2", "TTL after expiry -> -2");
-    let exists_after = send_cmd(&mut s, &["EXISTS", "exp:s"]).await;
-    assert_contains(&exists_after, "0", "EXISTS after expiry -> 0");
+   // EXPIRE: seconds
+   let _ = send_cmd(&mut s, &["SET", "exp:s", "v"]).await;
+   let ex = send_cmd(&mut s, &["EXPIRE", "exp:s", "1"]).await;
+   assert_contains(&ex, "1", "EXPIRE exp:s 1 -> 1 (applied)");
+   let ttl1 = send_cmd(&mut s, &["TTL", "exp:s"]).await;
+   assert!(
+       ttl1.contains("1") || ttl1.contains("0"),
+       "TTL exp:s should be 1 or 0, got: {}",
+       ttl1
+   );
+   sleep(Duration::from_millis(1100)).await;
+   let get_after = send_cmd(&mut s, &["GET", "exp:s"]).await;
+   assert_contains(&get_after, "$-1", "GET after expiry should be Null");
+   let ttl_after = send_cmd(&mut s, &["TTL", "exp:s"]).await;
+   assert_contains(&ttl_after, "-2", "TTL after expiry -> -2");
+   let exists_after = send_cmd(&mut s, &["EXISTS", "exp:s"]).await;
+   assert_contains(&exists_after, "0", "EXISTS after expiry -> 0");
 
-    // PEXPIRE: milliseconds
-    let _ = send_cmd(&mut s, &["SET", "exp:ms", "v"]).await;
-    let pex = send_cmd(&mut s, &["PEXPIRE", "exp:ms", "1500"]).await;
-    assert_contains(&pex, "1", "PEXPIRE exp:ms 1500 -> 1 (applied)");
-    let ttl_ms1 = send_cmd(&mut s, &["TTL", "exp:ms"]).await;
-    assert!(
-        ttl_ms1.contains("1") || ttl_ms1.contains("0"),
-        "TTL exp:ms should be 1 or 0 soon after PEXPIRE, got: {}",
-        ttl_ms1
-    );
-    sleep(Duration::from_millis(1600)).await;
-    let exists_ms_after = send_cmd(&mut s, &["EXISTS", "exp:ms"]).await;
-    assert_contains(&exists_ms_after, "0", "EXISTS exp:ms after ms expiry -> 0");
+   // PEXPIRE: milliseconds
+   let _ = send_cmd(&mut s, &["SET", "exp:ms", "v"]).await;
+   let pex = send_cmd(&mut s, &["PEXPIRE", "exp:ms", "1500"]).await;
+   assert_contains(&pex, "1", "PEXPIRE exp:ms 1500 -> 1 (applied)");
+   let ttl_ms1 = send_cmd(&mut s, &["TTL", "exp:ms"]).await;
+   assert!(
+       ttl_ms1.contains("1") || ttl_ms1.contains("0"),
+       "TTL exp:ms should be 1 or 0 soon after PEXPIRE, got: {}",
+       ttl_ms1
+   );
+   sleep(Duration::from_millis(1600)).await;
+   let exists_ms_after = send_cmd(&mut s, &["EXISTS", "exp:ms"]).await;
+   assert_contains(&exists_ms_after, "0", "EXISTS exp:ms after ms expiry -> 0");
 
-    // PERSIST: remove expiration
-    let _ = send_cmd(&mut s, &["SET", "exp:persist", "v"]).await;
-    let _ = send_cmd(&mut s, &["EXPIRE", "exp:persist", "5"]).await;
-    let ttl_pre = send_cmd(&mut s, &["TTL", "exp:persist"]).await;
-    assert!(
-        ttl_pre.contains("5")
-            || ttl_pre.contains("4")
-            || ttl_pre.contains("3")
-            || ttl_pre.contains("2")
-            || ttl_pre.contains("1")
-            || ttl_pre.contains("0"),
-        "TTL exp:persist should be >=0 before persist, got: {}",
-        ttl_pre
-    );
-    let persist1 = send_cmd(&mut s, &["PERSIST", "exp:persist"]).await;
-    assert_contains(&persist1, "1", "PERSIST should remove expiration");
-    let ttl_post = send_cmd(&mut s, &["TTL", "exp:persist"]).await;
-    assert_contains(&ttl_post, "-1", "TTL after PERSIST -> -1 (no expiration)");
-    // Second persist should return 0 (nothing to remove)
-    let persist2 = send_cmd(&mut s, &["PERSIST", "exp:persist"]).await;
-    assert_contains(
-        &persist2,
-        "0",
-        "PERSIST again -> 0 (no expiration to remove)",
-    );
+   // PERSIST: remove expiration
+   let _ = send_cmd(&mut s, &["SET", "exp:persist", "v"]).await;
+   let _ = send_cmd(&mut s, &["EXPIRE", "exp:persist", "5"]).await;
+   let ttl_pre = send_cmd(&mut s, &["TTL", "exp:persist"]).await;
+   assert!(
+       ttl_pre.contains("5") || ttl_pre.contains("4") || ttl_pre.contains("3") || ttl_pre.contains("2") || ttl_pre.contains("1") || ttl_pre.contains("0"),
+       "TTL exp:persist should be >=0 before persist, got: {}",
+       ttl_pre
+   );
+   let persist1 = send_cmd(&mut s, &["PERSIST", "exp:persist"]).await;
+   assert_contains(&persist1, "1", "PERSIST should remove expiration");
+   let ttl_post = send_cmd(&mut s, &["TTL", "exp:persist"]).await;
+   assert_contains(&ttl_post, "-1", "TTL after PERSIST -> -1 (no expiration)");
+   // Second persist should return 0 (nothing to remove)
+   let persist2 = send_cmd(&mut s, &["PERSIST", "exp:persist"]).await;
+   assert_contains(&persist2, "0", "PERSIST again -> 0 (no expiration to remove)");
 }
 
 #[tokio::test]
@@ -704,11 +678,7 @@ async fn test_11_set_with_options() {
 
     // SET with GET on non-existing key -> returns Null, sets value
     let set_get1 = send_cmd(&mut s, &["SET", "s1", "v1", "GET"]).await;
-    assert_contains(
-        &set_get1,
-        "$-1",
-        "SET s1 v1 GET returns Null when key didn't exist",
-    );
+    assert_contains(&set_get1, "$-1", "SET s1 v1 GET returns Null when key didn't exist");
     let g1 = send_cmd(&mut s, &["GET", "s1"]).await;
     assert_contains(&g1, "v1", "GET s1 after first SET");
 
@@ -752,42 +722,42 @@ async fn test_11_set_with_options() {
 
 #[tokio::test]
 async fn test_09_mget_mset_and_variadic_exists_del() {
-    let (server, port) = start_test_server("mget_mset_variadic").await;
-    spawn_listener(server, port).await;
-    sleep(Duration::from_millis(150)).await;
+   let (server, port) = start_test_server("mget_mset_variadic").await;
+   spawn_listener(server, port).await;
+   sleep(Duration::from_millis(150)).await;
 
-    let mut s = connect(port).await;
+   let mut s = connect(port).await;
 
-    // MSET multiple keys
-    let mset = send_cmd(&mut s, &["MSET", "k1", "v1", "k2", "v2", "k3", "v3"]).await;
-    assert_contains(&mset, "OK", "MSET k1 v1 k2 v2 k3 v3 -> OK");
+   // MSET multiple keys
+   let mset = send_cmd(&mut s, &["MSET", "k1", "v1", "k2", "v2", "k3", "v3"]).await;
+   assert_contains(&mset, "OK", "MSET k1 v1 k2 v2 k3 v3 -> OK");
 
-    // MGET should return values and Null for missing
-    let mget = send_cmd(&mut s, &["MGET", "k1", "k2", "nope", "k3"]).await;
-    // Expect an array with 4 entries; verify payloads
-    assert_contains(&mget, "v1", "MGET k1");
-    assert_contains(&mget, "v2", "MGET k2");
-    assert_contains(&mget, "v3", "MGET k3");
-    assert_contains(&mget, "$-1", "MGET missing returns Null");
+   // MGET should return values and Null for missing
+   let mget = send_cmd(&mut s, &["MGET", "k1", "k2", "nope", "k3"]).await;
+   // Expect an array with 4 entries; verify payloads
+   assert_contains(&mget, "v1", "MGET k1");
+   assert_contains(&mget, "v2", "MGET k2");
+   assert_contains(&mget, "v3", "MGET k3");
+   assert_contains(&mget, "$-1", "MGET missing returns Null");
 
-    // EXISTS variadic: count how many exist
-    let exists_multi = send_cmd(&mut s, &["EXISTS", "k1", "nope", "k3"]).await;
-    // Server returns SimpleString numeric, e.g. +2
-    assert_contains(&exists_multi, "2", "EXISTS k1 nope k3 -> 2");
+   // EXISTS variadic: count how many exist
+   let exists_multi = send_cmd(&mut s, &["EXISTS", "k1", "nope", "k3"]).await;
+   // Server returns SimpleString numeric, e.g. +2
+   assert_contains(&exists_multi, "2", "EXISTS k1 nope k3 -> 2");
 
-    // DEL variadic: delete multiple keys, return count deleted
-    let del_multi = send_cmd(&mut s, &["DEL", "k1", "k3", "nope"]).await;
-    assert_contains(&del_multi, "2", "DEL k1 k3 nope -> 2");
+   // DEL variadic: delete multiple keys, return count deleted
+   let del_multi = send_cmd(&mut s, &["DEL", "k1", "k3", "nope"]).await;
+   assert_contains(&del_multi, "2", "DEL k1 k3 nope -> 2");
 
-    // Verify deletion
-    let exists_after = send_cmd(&mut s, &["EXISTS", "k1", "k3"]).await;
-    assert_contains(&exists_after, "0", "EXISTS k1 k3 after DEL -> 0");
+   // Verify deletion
+   let exists_after = send_cmd(&mut s, &["EXISTS", "k1", "k3"]).await;
+   assert_contains(&exists_after, "0", "EXISTS k1 k3 after DEL -> 0");
 
-    // MGET after deletion should include Nulls for deleted keys
-    let mget_after = send_cmd(&mut s, &["MGET", "k1", "k2", "k3"]).await;
-    assert_contains(&mget_after, "$-1", "MGET k1 after DEL -> Null");
-    assert_contains(&mget_after, "v2", "MGET k2 remains");
-    assert_contains(&mget_after, "$-1", "MGET k3 after DEL -> Null");
+   // MGET after deletion should include Nulls for deleted keys
+   let mget_after = send_cmd(&mut s, &["MGET", "k1", "k2", "k3"]).await;
+   assert_contains(&mget_after, "$-1", "MGET k1 after DEL -> Null");
+   assert_contains(&mget_after, "v2", "MGET k2 remains");
+   assert_contains(&mget_after, "$-1", "MGET k3 after DEL -> Null");
 }
 #[tokio::test]
 async fn test_12_hash_incr() {
@@ -907,16 +877,9 @@ async fn test_14_expireat_pexpireat() {
     let mut s = connect(port).await;
 
     // EXPIREAT: seconds since epoch
-    let now_secs = SystemTime::now()
-        .duration_since(UNIX_EPOCH)
-        .unwrap()
-        .as_secs() as i64;
+    let now_secs = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs() as i64;
     let _ = send_cmd(&mut s, &["SET", "exp:at:s", "v"]).await;
-    let exat = send_cmd(
-        &mut s,
-        &["EXPIREAT", "exp:at:s", &format!("{}", now_secs + 1)],
-    )
-    .await;
+    let exat = send_cmd(&mut s, &["EXPIREAT", "exp:at:s", &format!("{}", now_secs + 1)]).await;
     assert_contains(&exat, "1", "EXPIREAT exp:at:s now+1s -> 1 (applied)");
     let ttl1 = send_cmd(&mut s, &["TTL", "exp:at:s"]).await;
     assert!(
@@ -926,23 +889,12 @@ async fn test_14_expireat_pexpireat() {
     );
     sleep(Duration::from_millis(1200)).await;
     let exists_after_exat = send_cmd(&mut s, &["EXISTS", "exp:at:s"]).await;
-    assert_contains(
-        &exists_after_exat,
-        "0",
-        "EXISTS exp:at:s after EXPIREAT expiry -> 0",
-    );
+    assert_contains(&exists_after_exat, "0", "EXISTS exp:at:s after EXPIREAT expiry -> 0");
 
     // PEXPIREAT: milliseconds since epoch
-    let now_ms = SystemTime::now()
-        .duration_since(UNIX_EPOCH)
-        .unwrap()
-        .as_millis() as i64;
+    let now_ms = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_millis() as i64;
     let _ = send_cmd(&mut s, &["SET", "exp:at:ms", "v"]).await;
-    let pexat = send_cmd(
-        &mut s,
-        &["PEXPIREAT", "exp:at:ms", &format!("{}", now_ms + 450)],
-    )
-    .await;
+    let pexat = send_cmd(&mut s, &["PEXPIREAT", "exp:at:ms", &format!("{}", now_ms + 450)]).await;
     assert_contains(&pexat, "1", "PEXPIREAT exp:at:ms now+450ms -> 1 (applied)");
     let ttl2 = send_cmd(&mut s, &["TTL", "exp:at:ms"]).await;
     assert!(
@@ -952,9 +904,5 @@ async fn test_14_expireat_pexpireat() {
     );
     sleep(Duration::from_millis(600)).await;
     let exists_after_pexat = send_cmd(&mut s, &["EXISTS", "exp:at:ms"]).await;
-    assert_contains(
-        &exists_after_pexat,
-        "0",
-        "EXISTS exp:at:ms after PEXPIREAT expiry -> 0",
-    );
-}
+    assert_contains(&exists_after_pexat, "0", "EXISTS exp:at:ms after PEXPIREAT expiry -> 0");
+}