https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 11 Jul 2026 00:00:00 GMT https://www.youngju.dev/blog/2026-07-11-postgres-rewritten-in-rust.en https://www.youngju.dev/blog/2026-07-11-postgres-rewritten-in-rust.en Malcolm Matis (malisper) released pgrust, a rewrite of Postgres in Rust. It targets Postgres 18.3 compatibility, passes more than 46,000 regression queries, and boots from an existing 18.3 data directory. This piece is an honest look at why that milestone is genuinely impressive, and what "passing 100% of the regression tests" does and does not prove. It also weighs the AI-generated code, the performance claims, and the distance from here to production Postgres. Sat, 11 Jul 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) postgresqlrustpgrustdatabaseregression-testsai-coding https://www.youngju.dev/blog/2026-07-11-postgres-rewritten-in-rust.ja https://www.youngju.dev/blog/2026-07-11-postgres-rewritten-in-rust.ja Malcolm Matis(malisper)が、PostgresをRustで書き直したpgrustを公開しました。Postgres 18.3互換を目標に、4万6千を超える回帰テストのクエリを通過し、既存の18.3データディレクトリから起動します。この記事は、そのマイルストーンがなぜ本当に印象的なのか、そして「回帰テスト100%通過」が何を証明し、何を証明しないのかを正直に掘り下げます。AIが生成したコード、性能の主張、そして本番Postgresまでの距離も併せて見ます。 Sat, 11 Jul 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) postgresqlrustpgrustdatabaseregression-testsai-coding https://www.youngju.dev/blog/2026-07-11-postgres-rewritten-in-rust https://www.youngju.dev/blog/2026-07-11-postgres-rewritten-in-rust Malcolm Matis(malisper)가 Postgres를 Rust로 다시 쓴 pgrust를 공개했습니다. Postgres 18.3 호환을 목표로 4만6천 개가 넘는 회귀 테스트 쿼리를 통과하고, 실제 18.3 데이터 디렉터리에서 부팅됩니다. 이 글은 그 마일스톤이 왜 진짜로 인상적인지, 그리고 "회귀 테스트 100% 통과"가 무엇을 증명하고 무엇을 증명하지 않는지를 정직하게 뜯어봅니다. AI 에이전트로 짠 코드, 성능 주장, 그리고 프로덕션 Postgres까지의 거리를 함께 봅니다. Sat, 11 Jul 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) postgresqlrustpgrustdatabaseregression-testsai-coding