Hi, We are implementing a use case that needs tight at least once delivery. Even in the case of failures of nodes, no messages must be lost.
We are trying to find out the least restrictive configurations that can give us at least once delivery. Following is what we found. - If we use acks=1, we can't guarantee that messages will not be lost, - If we use acks= all, we will have a good data safety but unclean leader failover may lead to data loss. As we found, setting acks=all and unclean.leader.election.enable = false will give us data safety so that no message will be lost (sacrificing the availability of the system). Is this the best option we have if we need zero message loss with maximum availability? Can anyone clarify? Thank you. Regards.
