[BUG] keydb gets extremely slow when master is not available #613

Hi all,

Describe the bug
Seems to be an issue with keydb when using --active-replica and --replicaof --multi-master.
When one instance goes down (and that also makes the dns to not resolve the fqdn) the remaining instance goes extremely slow:
time redis-cli -p 6379 ping
PONG
real 0m28.525s
user 0m0.007s
sys 0m0.006s

Does anyone have any idea of this situation?

version: keydb:x86_64_v6.0.9

If i set REPLICAOF NO ONE on the remaining instance it start to work fast again.

To reproduce

make that DNS is not aware of the FQDN present of REPLICAOF (in k8s scale down the sts)

Expected behavior

No slowness should be observed just because keydb can't resolve or dont have the master available

Thanks,