pgrust passes 100% of the Postgres regression suite - Rust arrives at the heart of data

A Rust port of PostgreSQL now passes all official regression tests. This is not a toy - it's a signal.

The fact

The author of pgrust, a PostgreSQL port in Rust, announces on malisper.me that the project now passes 100% of the official Postgres regression suite - more than 200 test files, tens of thousands of assertions, including the twisted cases (types, NULLs, planner, transactions). This is the first complete port in Rust at this level, after several partial attempts in recent years.

Our analysis

This is not about "replacing Postgres". The core in C runs, it is extraordinarily reliable, and no one is going to touch it in production. The real signal is the maturity of the Rust ecosystem for data: until now, Rust dominated modern databases (TiKV, SurrealDB, Neon partially, Databend). Proving that a historical C system, with its 30 years of twisted patterns, is faithfully reproducible in Rust, definitively validates the language for the data layer - not just for newcomers.

Second signal: the window for safe Rust extensions for Postgres (via pgrx) and for lightweight embedded runtimes (WASM-safe). This opens up edge use cases that the C core does not handle well.

To watch

• The compared performance in real OLTP workloads (not just regression) - the author must publish benchmarks.
• The next announcements from Postgres-native players (Neon, Supabase, Timescale) on their potential use of the Rust port in their stacks.