I made a build profiler to understand Bun's compile times

Lalit Maganti built buildprof, an open-source Linux tool that records every process spawned during a build and renders them on a shared timeline. He used it to investigate the 5x speed difference between Bun's Zig and Rust builds, tracing the bottleneck to Full LTO in the linker and a downloaded WebKit library that amplified it.

Blog post · Performance · Build Tools · Rust · Zig

A Search-and-Inference Database from Scratch in Pure Zig

Antfly recounts rewriting their Go retrieval engine in Zig while still early: first-principles design, caring about the model over embeddings, TigerBeetle-style simulation testing, and what they learned.

Blog post · Zig · Databases · AI Agents · Systems Programming