add rocksdb, mockable database, tests

Author: snowmead

Cargo.lock

@@ -25,15 +25,20 @@ tokio = { version = "1.32.0", features = ["full"] }
 tracing = "0.1.37"
 serde_json = "1.0.107"
 serde = { version = "1.0.188", features = ["derive"] }
-redis = { version = "0.25.0", features = [
-    "tokio-comp",
-    "tokio-rustls-comp",
-    "json",
-] }
+rocksdb = { version = "0.22.0", features = [
+    "multi-threaded-cf",
+], optional = true }
 chrono = "0.4.31"
 thiserror = "1.0.49"
 async-trait = "0.1.73"
 num-traits = "0.2.17"
 bounded-integer = { version = "0.5.7", features = ["types", "num-traits02"] }
 aquamarine = "0.3.2"
 tiktoken-rs = "0.5.8"
+
+[dev-dependencies]
+futures = "0.3"
+uuid = { version = "1.0", features = ["v4"] }
+
+[features]
+rocksdb = ["dep:rocksdb"]