Validate Entity Tag (ETag)

Add another layer of validation for the cached objects.

How it works

This behavior instructs the edge servers to compare the requestโ€™s ETag header with the header of the cached object. If the headers differ, the edge server sends a new copy of the object. This validation occurs in addition to the default validation of Last-Modified and If-Modified-Since headers.
Validation of entity tags improves efficiency of caches and saves bandwidth by preventing unnecessary data transfer.

This behavior doesn't include any options. Specifying the behavior itself enables it.


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