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stale-if-error support

Vercel | In Edition 21, Saturday 14 Feb 2026

The call on this one

DEPLOYif you run origin servers that fail intermittently

SOURCE Vercel, stale-if-error Cache-Control header is now supported

Vercel CDN now supports the stale-if-error Cache-Control directive, serving previously cached responses during 500 errors, network failures, or DNS errors.

Added to The Deploy Log Tuesday 15 Sep 2026, updated Thursday 17 Sep 2026. Read Edition 21, the edition that carried it.

84 rows from Vercel in The Deploy Log are dated on or before this one, this one included.

The same day from Vercel: GLM-5 on AI Gateway (0 days apart). After it: Gemini 3.1 Pro on AI Gateway, 5 days later.

Week of February 9, 2026 | February 2026

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