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HTTP caching infrastructure

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Simon Willison

Longstanding desire for Vary header support

IN CONTEXTHTTP caching infrastructure1 viewpoints
2026-09-23

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Longstanding desire for Vary header support

Simon Willison has wanted Cloudflare to support the HTTP Vary header for years.

Simon Willison ↗HTTP caching infrastructure ↗Share insight ↗

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Supporting evidence

Simon Willison·

Comment: We just shipped support for the ugliest part of HTTP: Vary

Original excerpt

I've been wanting this from Cloudflare for years .
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