Kafka - Consumers
You want to implement a Kafka consumer that processes messages exactly once. Which offset management strategy should you use?
You want to implement a Kafka consumer that processes messages exactly once. Which offset management strategy should you use?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand exactly-once processing requirements
Exactly-once requires committing offsets only after successful processing to avoid duplicates or data loss.Step 2: Choose offset commit strategy
Disabling auto-commit and committing synchronously after processing ensures offsets reflect processed messages accurately.Final Answer:
Disable auto-commit and commit offsets after processing each message synchronously -> Option BQuick Check:
Exactly-once = manual sync commit after processing [OK]
Quick Trick: Commit offsets only after processing to ensure exactly-once [OK]
Common Mistakes:
- Using auto-commit for exactly-once
- Committing offsets before processing
- Not committing offsets causing duplicates
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