This project is a simple Redis-like server implemented in Rust. It supports a subset of Redis commands and can be used as a lightweight in-memory key-value store.

• Supported Commands:
  • GET: Retrieve the value of a key.
  • SET: Set the value of a key.
  • DEL: Delete a key.
  • EXISTS: Check if a key exists.
  • KEYS: List all keys matching a pattern.
  • INCR: Increment the integer value of a key.
  • DECR: Decrement the integer value of a key.
  • PING: Respond with PONG.
  • ECHO: Echo back the provided argument.
  • FLUSHALL: Clear all keys in the database.
  • GETALL: Retrieve all keys and values in the database.
  • QUIT: Close the connection.

redis-cli -h 127.0.0.1 -p 6380

• Set a key:

  SET mykey "Hello"
  

• Get a key:

  GET mykey
  

• Delete a key:

  DEL mykey
  

• Check if a key exists:

  EXISTS mykey
  

• List all keys:

  KEYS *
  

• Increment a key:

  INCR counter
  

• Decrement a key:

  DECR counter
  

• Ping the server:

  PING
  

• Echo a message:

  ECHO "Hello, World!"
  

• Flush all keys:

  FLUSHALL
  

• Get all keys and values:

  GETALL
  

• Quit the session:

  QUIT
  

• src/core/: Contains the core logic for handling commands and managing the database.

  • cmd.rs: Defines the Commands enum and command handlers.
  • db.rs: Implements the in-memory database.
  • expiry.rs: (Optional) Handles key expiration.
  • resp_parser.rs: Parses Redis Serialization Protocol (RESP) messages.
  • resp_encoder.rs: Encodes responses in RESP format.

• src/server.rs: Implements the TCP server and connection handling.