redis 8.x-1.9

Performance improvements and bugfixes

Default and opt-in performance improvements

This release includes two useful performance improvements, #3498940: Optimize bin cache tags and last write timetamp is enabled by default and #3500680: Allow to remove support for invalidateAll() and treat it as deleteAll(), requires an opt-in, see https://www.drupal.org/node/3500807 and the updated documentation.

Together, they reduce the number of Redis operations required to serve a page cache hit from 6 to 5. Combined with some core issues, it can also save 10+ (from 30+ to less than 20) operations during bootstrap on a dynamic page cache hit, see the following two core issues:

#3500687: Use bootstrap cache bin in ThemeExtensionList
#3500683: Allow access policies to opt out of caching

(Edit: This previously claimed to save 3 (9 to 6) cache operations. However, 3 of those 9 turned out to be a stray config cache lookup that shouldn't happen on most sites).

Additional ideas to further reduce redis operations related to cache tags are investigated in #3436146: Introduce a list of "frequent cache tags" to reduce lookup query amount.

Contributors (5)

_pratik_, berdir, florenttorregrosa, grimreaper, pgndrupal

Changelog

Issues: 5 issues resolved.

Changes since 8.x-1.8:

Bug

• #3352651 by grimreaper, _pratik_: redis.admin_display route not found
• #3494308 by berdir, pgndrupal: FATAL "Service "queue.redis(_reliable)" not found" error when setting `queue_default`

Task

• #3493855: Relay tests are broken
• #3498940 by berdir: Optimize bin cache tags and last write timetamp
• #3500680 by berdir: Allow to remove support for invalidateAll() and treat it as deleteAll()