[wp-trac] [WordPress Trac] #60011: 6.4.1 seems to deliver poor external cache performance compared with 6.3.2

[WordPress Trac]

#60011: 6.4.1 seems to deliver poor external cache performance compared with 6.3.2
--------------------------+------------------------------
 Reporter:  bjornha       |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Cache API     |     Version:  6.4
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  performance
--------------------------+------------------------------

Comment (by svyazy):

 We had to revert from WordPress version 6.4.2 to 6.3.2 due to the same
 performance issues with external caching.

 We are utilizing an AWS Redis Cache cluster version 6.2.6 and Redis Object
 Cache 2.4.4 plugin as the object cache, alongside PHP 7.4 as the base
 platform.

 After upgrading WordPress to version 6.4.2, our Cache Hit Rate decreased
 from an average of 99% to 40%. Additionally, Memory Fragmentation Ratio
 increased from 1.04 to 2.9.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/60011#comment:7>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform