Category: API
Summary: Removal of Pragma and Expires response headers
These HTTP response headers will no longer be returned:
- Pragma
- Expires
There will be no change to the application behavior as these headers were intended to be used for HTTP Caching by browsers, but were not used as the Cache-Control header was also set
Context: The Pragma and Expires response headers are not used by browsers for HTTP caching when the Cache-Control response header is present. With all responses from Public Api having the Cache-Control header set, pragma and expires are unneeded
Impact: Any applications implementing HTTP caching should rely on the Cache-Control header. All browsers should already be using the Cache-Control header
Date of Change: On or after 9/17/2021
Impacted APIs:
All APIs are impacted since these headers are added to every HTTP response.