Edge and Browser Cache TTL

Edge Cache TTL (Time to Live) specifies the maximum time to cache a resource in the Cloudflare global network. Edge Cache TTL is not visible in response headers and the minimum Edge Cache TTL depends on plan type.

For more information on how to set up Edge Cache TTL, refer to Cache rules.

The Browser Cache TTL sets the expiration for resources cached in a visitors browser. By default, Cloudflare honors the cache expiration set in your Expires and Cache-Control headers but overrides those headers if:

• The value of the Expires or Cache-Control header from the origin web server is less than the Browser Cache TTL Cloudflare setting.
• The origin web server does not send a Cache-Control or an Expires header.

Unless specifically set in a cache rule, Cloudflare does not override or insert Cache-Control headers if you set Browser Cache TTL to Respect Existing Headers.

For more information on setting the Browser Cache TTL, refer to Set Browser Cache TTL.