Distributed Resilience · interview question
Why must Kafka consumers usually be idempotent?
Multiple choiceMediumchapter-18-curatedpremiumdistributed-resiliencekafka
Answer and explanation
Correct answer
A. Because brokers can redeliver a message and the handler must tolerate duplicates
Why
Reliable messaging systems often provide at-least-once delivery behavior. Consumers therefore need deduplication or naturally idempotent logic so retries do not corrupt business state.
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