CDN request collapsing

The Vercel CDN now collapses over 3M requests per day on cache miss, on top of 90M collapsed requests from background revalidations, using node and regional distributed locks with three second timeouts.

Vercel | In Edition 2, Saturday 27 Sep 2025

SOURCE Vercel, Preventing the stampede: Request collapsing in the Vercel CDN

Added to The Deploy Log Tuesday 15 Sep 2026, updated Thursday 17 Sep 2026. Read Edition 2, the edition that carried it.

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