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How can you ensure message order is preserved for a specific key when using Kafka Producer API?

hard📝 Application Q9 of 15
Kafka - Producers
How can you ensure message order is preserved for a specific key when using Kafka Producer API?
ASend all messages with the same key to ensure they go to the same partition
BUse different keys for each message to distribute load
CSend messages asynchronously without waiting for acknowledgments
DUse multiple producers to parallelize sending
Step-by-Step Solution
Solution:

  1. Step 1: Understand Kafka partitioning

    Messages with the same key go to the same partition, preserving order.

  2. Step 2: Analyze other options

    Different keys distribute messages, async sending doesn't guarantee order, multiple producers can cause disorder.

  3. Final Answer:

    Send all messages with the same key to ensure they go to the same partition -> Option A

  4. Quick Check:

    Same key = same partition = order preserved [OK]
Quick Trick: Use same key to keep message order in Kafka [OK]
Common Mistakes:
  • Using different keys breaks order
  • Assuming async send preserves order
  • Using multiple producers causes disorder

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