Ffi on engineering log/tags/ffi/Recent content in Ffi on engineering logHugoen-USCopyright © 2026 engineering logSat, 25 Jul 2026 00:00:00 +0000Why I Rewrote Our Hot Path in Rust/blog/why-i-rewrote-our-hot-path-in-rust/Sat, 25 Jul 2026 00:00:00 +0000/blog/why-i-rewrote-our-hot-path-in-rust/A Go service was burning 40% CPU on JSON serialization. A targeted Rust rewrite via FFI cut p99 latency by 3x.