CLOUDFLARE has introduced Cache Response Rules, a new mechanism that allows users to adjust caching behavior after a response from the origin server but before it is cached by Cloudflare. This addresses common issues where undesirable headers, such as `Set-Cookie` or restrictive `Cache-Control` headers, prevent caching. By utilizing these rules, users can rewrite cache directives and strip problematic headers to improve cache hit ratios and performance without needing to modify the origin directly.
Cache Response Rules operate in the response phase, while traditional Cache Rules work in the request phase, answering different questions regarding caching strategy. Overall, this new feature aims to enhance caching efficiency and reduce the load on origin servers.