Cache stores copies of frequently accessed content (such as images, videos, or webpages) in geographically distributed data centers that are located closer to end users than origin servers, reducing server load and improving website performance.| Cloudflare Docs
Cloudflare respects the origin web server’s cache headers in the following order unless an Edge Cache TTL cache rule overrides the headers. Refer to the Edge TTL section for details on default TTL behavior.| Cloudflare Docs