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  • acks=0
    • If set to zero then the producer will not wait for any acknowledgment from the server at all.
  • acks=1
    • This will mean the leader will write the record to its local log but will respond without awaiting full acknowledgement from all followers.
  • acks=all(-1)
    • This means the leader will wait for the full set of in-sync replicas to acknowledge the record.
  • acks=min.insync.replicas(-2)
    • This means the leader will wait for the min.insync.replicas number of replicas to acknowledge the record. The min.insync.replicas config can be defined in broker or topic (if overridden in topic level)

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