This PR was merged into the 6.1 branch. Discussion ---------- [Cache] Optimize caching of tags | Q | A | ------------- | --- | Branch? | 6.1 | Bug fix? | no | New feature? | no  | Deprecations? | no  | Tickets | -  | License | MIT | Doc PR | -  It's the follow-up to #42997. 1. Forcing the adapter to fetch tags on item commits makes the algorithm straightforward and a bit more optimized. 2. Caching tag versions only when they are retrieved from or being persisted to the pool ensures that any tagged item will be rejected when there is no related tags in the pool. 3. Using FIFO instead of LRU for known tag versions allows to use all cached tags until expiration and still be able to prevent memory leak.  Commits ------- 68f309b [Cache] Optimize caching of tags

Uh oh!