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<img src="limbo.png" width="200" align="right" />
# Limbo
A modern SQLite-compatible database library built with Rust.
## Features
* SQLite compatibility: SQL dialect (_wip_) and file format (_read-only_)
* Asynchronous I/O support (_wip_)
* WebAssembly bindings (_wip_)
## Getting Started
Limbo is currently read-only. You can either use the `sqlite3` program to create a database:
```console
$ sqlite3 database.db
SQLite version 3.42.0 2023-05-16 12:36:15
Enter ".help" for usage hints.
sqlite> CREATE TABLE users (id INT PRIMARY KEY, username TEXT);
sqlite> INSERT INTO users VALUES (1, 'alice');
sqlite> INSERT INTO users VALUES (2, 'bob');
```
or use the testing script to generate one for you:
```console
./testing/gen-database.py
```
You can then start the Limbo shell with:
```console
$ cargo run database.db
Welcome to Limbo SQL shell!
> SELECT * FROM users LIMIT 1;
|1|Cody|Miller|mhurst@example.org|525.595.7319x21268|33667 Shaw Extension Suite 104|West Robert|VA|45161|`
```
## Developing
Run tests:
```console
cargo test
```
Test coverage report:
```
cargo tarpaulin -o html
```
Run benchmarks:
```console
cargo bench
```
Run benchmarks and generate flamegraphs:
```console
echo -1 | sudo tee /proc/sys/kernel/perf_event_paranoid
cargo bench --bench benchmark -- --profile-time=5
```
## Publications
* 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.
[MIT license]: https://github.com/penberg/limbo/blob/main/LICENSE.md