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λykiaDB

CI

codecov

LykiaDB logo

Lykia is a document database management system built for educational purposes. The famous book, Crafting Interpreters, was the main source of inspiration for the project. It turned into a database, though.

Overview

  • 100% safe Rust, #BlazinglyFast
  • A weird scripting and query language, combination of JavaScript and SQL. The language is a separate module thus can be used without the database.
  • A subset of JSON data types in both scripting language itself and storage
  • In-disk and in-memory storage
  • ACID compliance
  • Replication

Primary goals

  • Core scripting language + DML/DDL SQL
  • A minimal standard library
  • Modular architecture for core and surrounding components
  • Query planning and binding (in progress)
  • Persistent storage engine
  • Multi-version concurrency control
  • Query optimization

Secondary goals

  • Playground app

Advanced

  • Replication with Raft
  • JIT execution for expression evaluation

Getting Started

To use Lykia, you can download the latest release from the GitHub releases page.

Run the server:

$ cargo run --release --bin lykiadb-server

Run the shell:

$ cargo run --release --bin lykiadb-shell lykiadb-shell/examples/fib.ly

For playground, please visit lykia-rs/playground

License

Lykia is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.