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https://github.com/seladb/pickledb-rs

PickleDB-rs is a lightweight and simple key-value store. It is a Rust version for Python's PickleDB
https://github.com/seladb/pickledb-rs

database db key-value-database kv lightweight nosql nosql-database pickledb rust

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PickleDB-rs is a lightweight and simple key-value store. It is a Rust version for Python's PickleDB

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# PickleDB



[![Rust test](https://github.com/seladb/pickledb-rs/workflows/Rust%20test/badge.svg)](https://github.com/seladb/pickledb-rs/actions?query=workflow%3A%22Rust+test%22)

[![Rust audit](https://github.com/seladb/pickledb-rs/workflows/Rust%20audit/badge.svg)](https://github.com/seladb/pickledb-rs/actions?query=workflow%3A%22Rust+audit%22)

[![Crate](https://img.shields.io/crates/v/pickledb.svg)](https://crates.io/crates/pickledb)

[![API](https://docs.rs/pickledb/badge.svg)](https://docs.rs/pickledb)



PickleDB is a lightweight and simple key-value store written in Rust, heavily inspired by [Python's PickleDB](https://pythonhosted.org/pickleDB/)



## PickleDB is fun and easy to use



```rust

use pickledb::{PickleDb, PickleDbDumpPolicy, SerializationMethod};



fn main() {



    // create a new DB with AutoDump (meaning every change is written to the file)

    // and with Json serialization (meaning DB will be dumped to file as a Json object)

    let mut db = PickleDb::new("example.db", PickleDbDumpPolicy::AutoDump, SerializationMethod::Json);



    // set the value 100 to the key 'key1'

    db.set("key1", &100).unwrap();



    // print the value of key1

    println!("The value of key1 is: {}", db.get::("key1").unwrap());



    // load the DB from the same file

    let db2 = PickleDb::load("example.db", PickleDbDumpPolicy::DumpUponRequest, SerializationMethod::Json).unwrap();



    // print the value of key1

    println!("The value of key1 as loaded from file is: {}", db2.get::("key1").unwrap());

}

```



## Installation



This crate works with Cargo and can be found in [crates.io](https://crates.io/crates/pickledb)

Add this to your `Cargo.toml`:



```toml

[dependencies]

pickledb = "0.5.1"

```



## Documentation



All documentation for this crate can be found in [docs.rs](https://docs.rs/pickledb)



## Examples



There are currently two examples shipped with PickleDB:



- [Hello World](https://github.com/seladb/pickledb-rs/tree/master/examples/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](https://github.com/seladb/pickledb-rs/tree/master/examples/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 0.5.1



- Bugfix: Add missing JSON feature gate



### Version 0.5.0



- Turn on/off file formats with features

- `DumpUponRequest` policy no longer dumps on `Drop`

- (internal) Switch CI from TravisCI to GitHub Actions



### Version 0.4.1



- Bump up dependencies versions to fix vulnerabilities found in few of them



### Version 0.4.0



- Changed all doc tests from `ignore` to `no_run` so generated docs don't contain untested warnings

- Changed both instances of `lextend` to take iterators of references rather than a slice of values

- Fixed bug in `load_test()`

- Fixed rustfmt and clippy warnings

- Added examples to `Cargo.toml` to allow them to be run via Cargo



### Version 0.3.0



- Added new serialization options. Now PickleDB supports [JSON](https://crates.io/crates/serde_json), [Bincode](https://crates.io/crates/bincode),

  [YAML](https://crates.io/crates/serde_yaml) and [CBOR](https://crates.io/crates/serde_cbor) serializations

- Added proper error handling ([Issue #3](https://github.com/seladb/pickledb-rs/issues/3))

- Use `Path` and `PathBuf` instead of strings to describe DB paths

- Better organization of the code



### 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