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Postgres in Rust passing all tests is a major infrastructure milestone with high industry impact.

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Postgres rewritten in Rust, now passing 100% of the Postgres regression tests - malisper/pgrust
Summary

pgrust, a Rust rewrite of Postgres 18.3, passes 46,000 regression queries and is disk-compatible with existing Postgres data directories. An in-development version switches from process-per-connection to thread-per-connection, achieving 50% faster transactional performance and 300x faster analytical performance (currently 2x slower than Clickhouse on clickbench, with goals to surpass it). The project combines Rust's safety with AI-assisted programming to make Postgres internals more malleable for deeper server changes.

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malisper