Kafka topic configuration to achieve highest data safety.

[Isuru Boyagane <is...@cse.mrt.ac.lk>]

I'm using Kafka in a system where data safety should be at its notch. To
set up a Kafka topic I need to guarantee that no message will be lost.
What I found is,

   - if I use acks=1, we can't guarantee that messages will not be lost,
   - if I use acks= all, I will have a good data safety but unclean leader
   failover may lead to data loss.

As I 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 I have if I need zero message loss with maximum
availability?
Can anyone clarify?

Thanks.