Refresh Zero-Byte Cache Files

Category: Caching

Purpose: Determines how our edge servers handle a client's request for content that was cached as a 0-byte file.

Valid values are:

Enabled Result


Causes our edge server to re-fetch the asset from the origin server.


Restores the default behavior. The default behavior is to serve up valid cache assets upon request.

This feature is not required for correct caching and content delivery, but may be useful as a workaround. For example, dynamic content generators on origin servers can inadvertently result in 0-byte responses being sent to the edge servers. These types of responses are typically cached by our edge servers. If you know that a 0-byte response is never a valid response for such content, then this feature can prevent these types of assets from being served to your clients.

Default Behavior: Disabled.