Refresh Zero-Byte Cache Files

Applies To:
HTTP Large
HTTP Small
ADN
HTTP Rules Engine - Basic Rules
HTTP Rules Engine - Advanced Rules

This feature determines how an HTTP client's request for a 0-byte cache asset is handled by our edge servers.

Value Result
Enabled Causes our edge server to re-fetch the asset from the origin server.
Disabled Restores the default behavior. The default behavior is to serve up valid cache assets upon request.

Tip: 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.