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Which Kafka producer configuration enables exactly-once delivery semantics?

easy📝 Syntax Q12 of Q15
Kafka - Message Delivery Semantics
Which Kafka producer configuration enables exactly-once delivery semantics?
Aenable.idempotence = true
Backs = 0
Cretries = 0
Denable.idempotence = false
Step-by-Step Solution
Solution:

  1. Step 1: Identify config for exactly-once

    Kafka requires enable.idempotence = true to avoid duplicates and support exactly-once delivery.

  2. Step 2: Check other options

    The other options disable idempotence, acknowledgments, or retries, all preventing exactly-once.

  3. Final Answer:

    enable.idempotence = true -> Option A

  4. Quick Check:

    Idempotence true = exactly-once enabled [OK]
Quick Trick: Exactly-once needs idempotence enabled true [OK]
Common Mistakes:
MISTAKES
  • Setting acks to 0 disables delivery guarantees
  • Disabling retries breaks message reliability
  • Confusing idempotence false with true

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