Crystal - A Simple Key-Value Store

Crystal is a simple, persistent key-value store implemented in Rust with a REPL interface.

Features

• Persistent key-value storage
• Simple CRUD operations
• REPL interface for interactive use
• Binary serialization using bincode
• Command history persistence

Installation

1. Ensure you have Rust installed (https://www.rust-lang.org/)
2. Clone this repository
3. Build the project:

   cargo build --release
   

Usage

Start the REPL:

cargo run --features repl

Example Session

crystal> set name Alice
crystal> get name
Alice
crystal> rm name
crystal> get name
Key not found
crystal> exit

Commands

• set [key] [value] - Store a key-value pair
• get [key] - Retrieve a value by key
• rm [key] - Remove a key-value pair
• exit - Exit the REPL

Data Storage

Data is stored in binary format in the ./data directory. Command history is stored in history.txt.

License

Apache 2.0 - See LICENSE for details.