The block or element can change depending on the user.
This setting can be resource-consuming for sites with large number of users, and thus should only be used when BACKDROP_CACHE_PER_ROLE is not sufficient.
Related topics
File
- core/
includes/ common.inc, line 155 - Common functions that many Backdrop modules will need to reference.
Code
define('BACKDROP_CACHE_PER_USER', 0x0002)