kv-store

In-memory key-value store accessible over TCP. Nothing production-grade, this is just a toy project to play with Rust.

Features

• RESP (REdis Serialization Protocol) compatible — works with redis-cli and any Redis client library
• GET, SET, DEL, and PING commands
• TTL support via SET key value EX seconds
• Multi-client support (threaded, Arc<Mutex>)
• Write-ahead log (WAL) for persistence across restarts
• Background garbage collection for expired entries

Usage

cargo build --release
cargo run

Connect with redis-cli:

redis-cli -p 7878

Protocol

Commands are sent as RESP arrays of bulk strings. Responses use standard RESP types.

SET

> SET key value
+OK

> SET key value EX 60
+OK

GET

> GET key
$5
value

> GET missing
$-1

DEL

> DEL key
:1

> DEL missing
:0

PING

> PING
+PONG

Unrecognized or malformed commands return -ERR <message>.

Testing

cargo test