Limbo
Limbo is a work-in-progress, in-process OLTP database management system, compatible with SQLite.
---
## Features
Limbo is an in-process OLTP database engine library that has:
* **Asynchronous I/O** support on Linux with `io_uring`
* **SQLite compatibility** [[doc](COMPAT.md)] for SQL dialect, file formats, and the C API
* **Language bindings** for JavaScript/WebAssembly, Rust, Go, Python, and [Java](bindings/java)
* **OS support** for Linux, macOS, and Windows
## Getting Started
### 💻 Command Line
You can install the latest `limbo` release with:
```shell
curl --proto '=https' --tlsv1.2 -LsSf \
https://github.com/tursodatabase/limbo/releases/latest/download/limbo-installer.sh | sh
```
Then launch the shell to execute SQL statements:
```console
Limbo
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database
limbo> CREATE TABLE users (id INT PRIMARY KEY, username TEXT);
limbo> INSERT INTO users VALUES (1, 'alice');
limbo> INSERT INTO users VALUES (2, 'bob');
limbo> SELECT * FROM users;
1|alice
2|bob
```
You can also build and run the latest development version with:
```shell
cargo run
```
### ✨ JavaScript (wip)
Installation:
```console
npm i limbo-wasm
```
Example usage:
```js
import { Database } from 'limbo-wasm';
const db = new Database('sqlite.db');
const stmt = db.prepare('SELECT * FROM users');
const users = stmt.all();
console.log(users);
```
### 🐍 Python (wip)
```console
pip install pylimbo
```
Example usage:
```python
import limbo
con = limbo.connect("sqlite.db")
cur = con.cursor()
res = cur.execute("SELECT * FROM users")
print(res.fetchone())
```
## Contributing
We'd love to have you contribute to Limbo! Please check out the [contribution guide] to get started.
## FAQ
### How is Limbo different from libSQL?
Limbo is a research project to build a SQLite compatible in-process database in Rust with native async support. The libSQL project, on the other hand, is an open source, open contribution fork of SQLite, with focus on production features such as replication, backups, encryption, and so on. There is no hard dependency between the two projects. Of course, if Limbo becomes widely successful, we might consider merging with libSQL, but that is something that will be decided in the future.
## Publications
* Pekka Enberg, Sasu Tarkoma, Jon Crowcroft Ashwin Rao (2024). Serverless Runtime / Database Co-Design With Asynchronous I/O. In _EdgeSys ‘24_. [[PDF]](https://penberg.org/papers/penberg-edgesys24.pdf)
* Pekka Enberg, Sasu Tarkoma, and Ashwin Rao (2023). Towards Database and Serverless Runtime Co-Design. In _CoNEXT-SW ’23_. [[PDF](https://penberg.org/papers/penberg-conext-sw-23.pdf)] [[Slides](https://penberg.org/papers/penberg-conext-sw-23-slides.pdf)]
## License
This project is licensed under the [MIT license].
### Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in Limbo by you, shall be licensed as MIT, without any additional
terms or conditions.
[contribution guide]: https://github.com/tursodatabase/limbo/blob/main/CONTRIBUTING.md
[MIT license]: https://github.com/tursodatabase/limbo/blob/main/LICENSE.md