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Why is idempotency important in Kafka producers?

easy📝 Conceptual Q2 of 15
Kafka - Producers
Why is idempotency important in Kafka producers?
AIt increases the speed of message delivery.
BIt prevents duplicate messages during retries.
CIt compresses messages to save bandwidth.
DIt encrypts messages for security.
Step-by-Step Solution
Solution:

  1. Step 1: Define idempotency in Kafka

    Idempotency ensures that even if a message is sent multiple times due to retries, it is stored only once.

  2. Step 2: Understand the benefit

    This prevents duplicate messages in the topic caused by retries after transient failures.

  3. Final Answer:

    It prevents duplicate messages during retries. -> Option B

  4. Quick Check:

    Idempotency = no duplicates [OK]
Quick Trick: Idempotency avoids duplicates on retries [OK]
Common Mistakes:
  • Thinking idempotency speeds up delivery
  • Confusing idempotency with compression
  • Assuming idempotency encrypts data

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