- Property Manager name: Cache Tag
- Behavior version: The
v2023-09-20rule format supports the
- Rule format status: GA, stable
- Access: Read-write
- Allowed in includes: Yes
This adds a cache tag to the requested object. With cache tags, you can flexibly fast purge tagged segments of your cached content. You can either define these tags with an
Edge-Cache-Tag header at the origin server level, or use this behavior to directly add a cache tag to the object as the edge server caches it. The
cacheTag behavior can only take a single value, including a variable. If you want to specify more tags for an object, add a few instances of this behavior to your configuration.
Note that this behavior is not compatible with the
dynamic_throughtput_optimization behavior. Don't include both behaviors in a rule for the same request.
|string (allows variables)|
Specifies the cache tag you want to add to your cached content. A cache tag is only added when the object is first added to cache. A single cache tag can't exceed 128 characters and can only include alphanumeric characters, plus this class of characters: