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Idempotency, retries & failure handlingMediumSDE-2

Consumer lag on one Kafka partition keeps growing while all other partitions are fine. Logs show the same offset failing again and again. What is happening, and what do you do now and long term?

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Answer out loud as you would in the room — clarify, give numbers, name the trade-off — then compare with the model answer.

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Design a distributed message queue (like Kafka) Lesson: Kafka: partitions, consumer groups and ordering

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