Two independent projects demonstrate Rust's increasing viability for rewriting performance-critical infrastructure.
Source 1 (malisper/pgrust on GitHub): A project rewriting PostgreSQL in Rust now passes 100% of the Postgres regression tests, showing that a Rust-based database can match the original's correctness.
confidence score
Strong evidence: 5 independent source classes support this read.
signal brief
Two independent projects demonstrate Rust's increasing viability for rewriting performance-critical infrastructure.
Source 1 (malisper/pgrust on GitHub): A project rewriting PostgreSQL in Rust now passes 100% of the Postgres regression tests, showing that a Rust-based database can match the original's correctness.
Source 2 (Pragmatic Engineer newsletter): Bun, a JavaScript runtime, was rewritten in Rust in just 11 days using AI assistance, at a token cost of $165K—a fraction of the typical time and cost.
These rewrites signal that Rust's memory safety and performance are being leveraged for foundational software, which could influence the AI-infra stack (e.g., more reliable database backends, faster runtimes). However, neither project is officially endorsed, and the Postgres rewrite is a personal project. Confidence is low due to limited authoritative sources.
What the sources said:
- From Source 1: "Postgres rewritten in Rust, now passing 100% of the Postgres regression tests."
- From Source 2: "A rewrite done in 11 days that would have taken a small team a year to complete, for $165K in tokens."
source data used
“<p><a href="https://lobste.rs/s/le3iri/postgres_rewritten_rust_now_passing_100">Comments</a></p> Tags: databases, vibecoding”
“A rewrite done in 11 days that would have taken a small team a year to complete, for $165K in tokens. Also: coding LLM “wars” heat up, AI fakers from North Korea still a problem when...”
“Rust A language empowering everyone to build reliable and efficient software. Why Rust? Performance Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and...”
“Points: 11 | Comments: 2 Author: blakeburnette Link: https://buildnectar.com Show HN: Nectar, a Rust-like React that compiles to WebAssembly”
“stars=0 | forks=0”
Decision support, not stock advice. This signal is research with cited evidence — not a recommendation to buy, sell, or hold any security.