
Bun 1.4 at Scrydon: A Quiet Upgrade With Loud Early Numbers
Bun 1.4 — the first stable release after Bun's runtime was rewritten from Zig to Rust — shipped on 20 August. A day later it was running across Scrydon's staging environment. The upgrade was uneventful; the first measurements were not. Across nine Bun runtime services, average CPU fell by 49.9% and average working-set memory by 60.4%, while traced traffic rose 27.1%.




