at the speed of
summary
Next.js runs on a new runtime called Bun that is written built in Zig and uses Apple’s JavaScriptCore, offering direct syscalls instead of libuv. Demoed numbers: Bun.sql claims up to 11x faster than mysql2, Bun’s S3 client ~6x faster, package installs up to 17x faster, tests up to 14x faster (23x in one benchmark), and a Hono deployment shows a 30% CPU drop. Swap to the runtime with bun run --bun and keep Node-compatible APIs.
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chapters (12)
- 0:00Bun and performance
- 1:30Node.js bottleneck 2025
- 4:19Hardware vs runtime limits
- 6:27Bun JavaScript runtime
- 8:12Bun APIs and speed
- 10:43Bun tooling ecosystem
- 11:47Next.js on Bun
- 13:33Bun in React Server
- 14:33Developer experience with Bun
- 15:58Bun apps on Vercel
- 17:21Adopting Bun incrementally
- 18:25Closing thanks
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