By default, Content Gateway caches objects served in response to requests that contain cookies unless the object is text. The proxy does not cache cookied text content, because object headers are stored as well as the object, and personalized cookie header values could be saved with the object.
Navigate to Configure > Protocols > HTTP > Cacheability.
In the Caching Response to Cookies area of the Dynamic Caching section, select a caching option:
Select Cache All but Text to cache all cookied content except content that is text (this is the default setting).
Select Cache Only Image Types to cache cookied content that is an image.
Select Cache Any Content Type to cache cookied content of all types.
Select No Cache on Cookies to not cache cookied content of any type.
Click Apply.