erikgrinaker/toydb resource

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

7276 stars · 625 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

toyDB is a distributed SQL database written in Rust, built from scratch as an educational project to illustrate database internals. It features Raft consensus, MVCC-based ACID transactions, pluggable storage engines, and a SQL query engine, prioritizing simplicity and correctness over performance.

Use cases

• learn how distributed SQL databases work internally
• study Raft consensus implementation in Rust
• understand MVCC and snapshot isolation transactions
• explore how a SQL query engine and optimizer are built
• read a simple codebase to learn database architecture
• run a small local Raft cluster for experimentation

When to choose

• you want to learn database internals from readable source code
• you need a teaching example of Raft, MVCC, and SQL execution
• you prefer correctness and clarity over production features

When to avoid

• you need a production database with performance, scalability, or availability guarantees
• you need a fully featured SQL dialect or rich tooling
• you need long-term support or a large contributor community

Facets

learning-resource · maturity stable

database search-engine parser databases microservices education developer-tools windows rust cli raft mvcc sql educational distributed-consensus storage-engine query-engine linux macos

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