Hi team, Here is a usage case: Assume each host in a kafka cluster a gigabit network adaptor. And the incoming traffic is 0.8gbps and at one point all the traffic goes to one host. The remaining bandwidth is not enough for the followers to replicate messages from this leader.
To make sure no broker will be dropped out of ISR, the intra-cluster bandwidth must be much larger than incoming/outgoing bandwidth. Otherwise, use replication factor 1. Is my understanding correct? Thanks. Regards, Libo