Validate Entity Tag (ETag)
Add another layer of validation for the cached objects. Validation of entity tags improves efficiency of caches and saves bandwidth by preventing unnecessary data transfer.
How it works
Instructs edge servers to compare the request's If-None-Match
header with the ETag
value of the cached object. If they are the same, the edge server returns a 304 Not Modified response containing only headers. If they differ, the edge server requests a new copy of the object from your origin server. This validation occurs in addition to the default validation of Last-Modified
and If-Modified-Since
headers.
Note that Akamai only supports strong
ETag
values. WeakETag
values are ignored and edge servers always return a 200 response with full body. For more details, see the RFC Standard.
This behavior doesn't include any options. Specifying the behavior itself enables it.
Updated 9 months ago