RedisCluster: native redis increment and decrement functionality

[boesing]

Feature Request

Q	A
New Feature	yes

Summary

The StorageInterface provides StorageInterface#decrementItem and StorageInterface#incrementItem. Redis itself has native increment and decrement functionality which is not implemented in the current implementation.

[boesing]

Just as a sidenote:
Imho, the whole increment/decrement stuff should be implemented as a dedicated interface (if at all) to all adapters such as FlushableInterface. The reason is, that the "generic" way on how other backends (and how RedisCluster does as of now) is not race-condition safe and thus might override other countervalues.

Thats why the RFC was raised in laminas-cache in 2021:
laminas/laminas-cache#117

[boesing]

With v4 of laminas-cache and therefore v3 of this adapter, the increment and decrement functionality was removed.
Closing here.