Revalidate While Stale Timer

Applies To:

HTTP LargeThis platform has been optimized to cache and deliver static content (e.g., HTML, CSS, JavaScript, ISO, multimedia, and software downloads, etc.) over HTTP or HTTPS.

HTTP SmallLegacy. If you are currently serving traffic over this platform, then you may continue to do so. However, we recommend that you serve your traffic over our more robust HTTP Large platform.

ADNThe Application Delivery Network platform has been optimized to deliver dynamic content (e.g., login credentials, account information, etc.) over HTTP or HTTPS. Typically, user-specific and database-driven content are served over this platform.

Rules EngineAllows the customization of how requests are handled by our CDN service. It may be used to override the default response provided by an origin server, CDN settings, and the default edge server behavior. - Advanced

This feature only affects how often our system communicates with your origin server. Do not confuse this feature with the Stale While Revalidate feature that allows the delivery of stale content.

This capability requires Rules Engine - Advanced Rules which must be purchased separately. Contact your CDN account manager to activate it.

Category: Specialty

Purpose: Determines how often, in seconds, the system will attempt to connect to an unavailable origin server.

Key information:

This capability requires both the Revalidate While Stale and Revalidate While Stale Timer features.
This feature determines how often the system will attempt revalidationCache revalidation is the process through which an edge server checks the origin server for a newer version of a cached asset. Revalidation is triggered when the TTL for the requested content has expired. with an origin server whose configuration is in stale mode due to repeated TCP connection failures. However, it does not apply to requests that have been assigned a Cache-Control: must-revalidate directive.

Learn more.

Default Behavior: By default, the system will not attempt to connect to your origin server while it is in stale mode.