...

src/options.rs

@@ -3,5 +3,6 @@ pub struct DBOption {
     pub dir: String,
     pub port: u16,
     pub debug: bool,
-    pub databases: u16, // number of logical DBs (default 16)
+    pub max_databases: Option<u64>, // None = unlimited, Some(n) = limit to n
+    pub encryption_key: Option<String>, // Master encryption key
 }