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README.md

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+# HeroDB
+
+Redis-compatible database server with encryption and AGE cryptographic operations.
+
+## Features
+
+- Redis protocol compatibility
+- String, hash, and list data types
+- Key expiration and persistence
+- Database encryption with ChaCha20-Poly1305
+- AGE encryption/decryption operations
+- Digital signatures with Ed25519
+- Persistent storage using redb
+
+## Installation
+
+```bash
+cargo build --release
+```
+
+## Usage
+
+```bash
+./target/release/herodb --dir /path/to/db --port 6379
+```
+
+### Options
+
+- `--dir`: Database directory (required)
+- `--port`: Server port (default: 6379)
+- `--debug`: Enable debug logging
+- `--encrypt`: Enable database encryption
+- `--encryption-key`: Master encryption key for encrypted databases
+
+### Examples
+
+```bash
+# Basic server
+herodb --dir ./data
+
+# Encrypted database
+herodb --dir ./data --encrypt --encryption-key "your-key"
+
+# Custom port with debug
+herodb --dir ./data --port 7000 --debug
+```
+
+## Redis Commands
+
+Supports standard Redis commands including:
+
+- **Strings**: GET, SET, MGET, MSET, INCR, DEL
+- **Hashes**: HGET, HSET, HGETALL, HDEL, HEXISTS
+- **Lists**: LPUSH, RPUSH, LPOP, RPOP, LLEN, LRANGE
+- **Keys**: KEYS, SCAN, EXISTS, EXPIRE, TTL
+- **Transactions**: MULTI, EXEC, DISCARD
+- **Server**: PING, ECHO, INFO, CONFIG
+
+## AGE Commands
+
+Extended commands for cryptographic operations:
+
+- **Key Generation**: `AGE GENENC`, `AGE GENSIGN`, `AGE KEYGEN`
+- **Encryption**: `AGE ENCRYPT`, `AGE DECRYPT`, `AGE ENCRYPTNAME`
+- **Signing**: `AGE SIGN`, `AGE VERIFY`, `AGE SIGNNAME`
+- **Management**: `AGE LIST`
+
+## Client Usage
+
+Connect using any Redis client:
+
+```bash
+redis-cli -p 6379 SET key value
+redis-cli -p 6379 GET key
+redis-cli -p 6379 AGE GENENC
+```
+
+## Architecture
+
+- **Storage**: redb embedded database
+- **Protocol**: Redis RESP protocol over TCP
+- **Encryption**: ChaCha20-Poly1305 for data, AGE for operations
+- **Concurrency**: Tokio async runtime