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Tue, October 14, 2025

Cloudflare addresses Workers CPU benchmark disparities

🔍 Cloudflare investigated an independent October benchmark comparing server-side JavaScript performance between Cloudflare Workers and Vercel, which initially showed Workers up to 3.5x slower. The company found multiple causes — scheduling heuristics, outdated V8 garbage-collector tuning, and framework-level inefficiencies in OpenNext/Next.js — and implemented fixes. Most changes are live and yield parity with Vercel across nearly all tested cases, with further work planned to close the remaining Next.js gap.

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