Redis replication and LFU caching

Question

I'm using Redis 4 with 3 instances, one master and two replicas.
Master instance is configured to have maxmemory limit using the allkeys-lfu policy.
I wonder should I forward my read queries also to master instance to make LFU policy work correctly. or I can forward them only to replicas and it still will work. ?

Answer 1

Slaves don't expire keys, instead they wait for masters to expire the keys. When a master expires a key (or evict it because of LRU), it synthesizes a DEL command which is transmitted to all the slaves.

according to: https://redis.io/topics/replication