Follows from https://gerrit.wikimedia.org/r/#/c/mediawiki/core/+/533701/.
We used to have it for:
- WAN - service MainWANObjectCache
- stash - service MainObjectStash
- message - service MessageCache
- session - SessionManager::__construct
- cluster - Hard to add, as it isn't a service. But seems rare enough that it might not matter. Covered by WAN for most if not all wikis. I'll treat this as non-blocking for now, to maybe add in a later release.
Perhaps it would also be useful to add it to:
- parser - service ParserCache
- apc-like backend - service LocalServerObjectCache