PickleDB

PickleDB is a lightweight and simple key-value store written in Rust, heavily inspired by Python's PickleDB

PickleDB is fun and easy to use

use pickledb::PickleDb;

fn main() {
    
    // create a new DB with AutoDum, meaning every change is written to the file
    let mut db = PickleDb::new("example.db", PickleDbDumpPolicy::AutoDump);
    
    // set the value 100 to the key 'key1'
    db.set("key1", &100);
    
    // print the value of key1
    println!("The value of key1 is: {}", db.get::<i32>("key1").unwrap());

    // load the DB from the same file
    let db2 = PickleDb::load("example.db", PickleDbDumpPolicy::DumpUponRequest).unwrap();

    // print the value of key1
    println!("The value of key1 as loaded from file is: {}", db2.get::<i32>("key1").unwrap());
}

Installation

This crate works with Cargo and can be found in crates.io Add this to your Cargo.toml:

[dependencies]
pickledb = "0.2.0"

Documentation

All documentation for this crate can be found in docs.rs

Examples

There are currently two examples shipped with PickleDB:

• Hello World which shows the basic usage of PickleDB: create a new DB, load a DB from file, get/set key-value pairs of different types, and more
• Lists which shows how to use lists in PickleDB: create new lists, add/remove items from lists, retrieve items from lists, remove lists, and more

Changelog

Version 0.2.0

• Dump the DB to file in a crash-safe manner using a temp file (Thanks jamwt from Reddit for the tip: https://www.reddit.com/r/rust/comments/agumun/check_out_pickledb_a_lightweight_and_simple/ee987j0)
• Extend lists became easier and multiple calls to lcreate(), ladd() and lextend() can be chained
• Added an iterator over keys and values in the DB
• Added an iterator over items in a list