Kuaishou Tech

Mar 19, 2026 · Backend Development

How Kuaishou Boosted Build Performance with AutoFDO, ThinLTO, BOLT, and Propeller

This article details Kuaishou's systematic compiler and build‑system optimizations—including AutoFDO, ThinLTO, BOLT, and a newly improved Propeller—showing how they reduced compilation time from hours to seconds, cut CPU usage by 10%, and achieved up to 15% performance gains while solving profile‑staleness and integration challenges.