External Max-Age

Category: Caching

Purpose: Determines the max-age interval for browser to edge server cache revalidation. In other words, the amount of time that will pass before a browser can check for a new version of an asset from an edge server.

Enabling this feature will generate Cache-Control:max-age and Expires headers from our edge servers and send them to the HTTP client. By default, these headers will overwrite those created by the origin server. However, the Cache-Control Header Treatment and the Expires Header Treatment features may be used to alter this behavior.

Key information:

Default Behavior: The Cache-Control/Expires headers cached with the response of the origin server will pass through to the browser.