Migrating API Service from Zod to Valibot: Bundle and Memory Drops

DanielLockyer · x · 2026-08-12

A developer shared performance metrics after migrating an API service with 250 routes from Zod to Valibot. Bundled with rsbuild, the bundle size decreased from 756kb to 737kb, and cold start memory usage dropped significantly from 103MB to 73MB.

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