[Kafka] acks=1; acks=all(-1), RF=3, min.insync.replicas=2

https://www.popit.kr/kafka-%EC%9A%B4%EC%98%81%EC%9E%90%EA%B0%80-%EB%A7%90%ED%95%98%EB%8A%94-producer-acks/

Kafka 운영자가 말하는 Producer ACKS | Popit