pgrust: PostgreSQL => Rust, with AI

Postgres was rewritten in Rust… and somehow passed every test - YouTube

Based on the video from Better Stack, here is a quick summary of pgrust:

• What it is: An experimental rewrite of PostgreSQL in Rust.

• Compatibility: It successfully passes all 46,066 official PostgreSQL regression queries, works with standard psql clients, and can boot directly from an existing Postgres 18.3 data directory.

• Architecture Shift: It replaces Postgres' traditional process-per-connection model with a thread-per-connection architecture using Rust threads, aiming to improve concurrency, reduce connection overhead, and provide built-in connection pooling.

• Performance Claims: The project claims potential performance improvements of 50% to 300x for certain workloads, though developers and commenters remain skeptical, viewing it primarily as an AI-assisted experiment rather than a production-ready replacement.

You can check out the source code in the pgrust GitHub repository or try it out directly on the pgrust website.

malisper/pgrust: Postgres rewritten in Rust, now passing 100% of the Postgres regression tests @GitHub

The goal is to make Postgres easier to change from the inside: keep the behavior Postgres-shaped, keep the real Postgres tests as the oracle, and use Rust plus AI-assisted programming to explore deeper server changes.

pgrust — postgres, rewritten in rust