I’ve been building QuillSQL, a small educational/research-oriented relational database in Rust. The architecture is inspired by BusTub (a clean parser → executor → storage layering), and the goal is hands-on learning + fast prototyping of DB internals.

Current features:

• A practical subset of SQL (DDL/DML, joins, aggregates)
• B+-tree indexing (with a basic buffer pool) — works well for range queries
• Basic transactions: BEGIN / COMMIT / ROLLBACK
• EXPLAIN to inspect query plans
• CLI + server (and a live demo)

Links:

• Live demo: https://quillsql.fly.dev
• GitHub: GitHub - feichai0017/QuillSQL: An educational Rust relational database (RDBMS) inspired by CMU 15445

Quick start:

cargo run --bin server
cargo run --bin client

I’d love feedback—especially on:

executor/operators (joins, aggregates)

index & buffer pool design

plan / EXPLAIN formatting and ergonomics

“Rusty” architecture improvements (traits/modules/error handling, etc.)

Issues/PRs are welcome (happy to tag “good first issue”). And if you find it useful, a helps a lot. Thanks!

1 post - 1 participant

Read full topic