By nicxvan on
Change record status: 
Draft (View all draft change records)
Project: 
Drupal core
Introduced in branch: 
11.2.x
Introduced in version: 
11.2.0
Issue links: 
https://www.drupal.org/node/3509179
Description: 

ViewAjaxResponse now extends CacheableAjaxResponse and adds cacheability metadata.

This means that reverse proxies are now able to cache certain ajax responses.

This should be a positive performance enhancement for most sites with no changes needed.

If your site relied on ViewAjaxResponse always being uncached you will need to evaluate the new behavior.

Impacts: 
Module developers
Site templates, recipes and distribution developers