Introducing Cache Response Rules

Cache Response Rules are a new feature introduced by Cloudflare to enhance caching efficiency by allowing modifications to be made to origin server responses before they are cached. This feature addresses common issues such as unintended headers like Set-Cookie and incorrect Cache-Control directives that prevent content from being cached efficiently, which can increase origin server load and infrastructure costs. Cache Response Rules operate in the response phase, after the origin server has replied but before Cloudflare writes to its cache, enabling adjustments like rewriting Cache-Control directives, managing cache tags, and stripping problematic headers without altering the origin server's code. This addition complements existing Cache Rules that run during the request phase and determine initial caching eligibility. By providing an additional layer of control, Cache Response Rules help optimize caching strategies, improve performance, and reduce unnecessary bandwidth usage.

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