Follow-up · depth 8
Compare Consumer Groups and Rebalance with a common alternative in a design review
Compare Consumer Groups and Rebalance with a common alternative in a design review
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Audio N/AQuick interview answer
Compare Consumer Groups and Rebalance vs the usual alternative on complexity, latency, failure modes, and ops cost. Pros: Elastic scale-out; at-least-once default with offset commit. Cons: Rebalance pauses consumption; sticky assign reduces churn.
Detailed answer
Design-review comparison for Consumer Groups and Rebalance: Axes: correctness, latency, throughput, complexity, operability. From the topic: Pros: Elastic scale-out; at-least-once default with offset commit. Cons: Rebalance pauses consumption; sticky assign reduces churn. Recommendation: pick Consumer Groups and Rebalance when its strengths match the SLO; otherwise choose the alternative and say why. Parent context: Use Consumer Groups and Rebalance as the core idea. Example shape: 6 partitions, 3 consumers → each gets 2 partitions; add 4th consumer triggers rebalance..
Full explanation
Show a clear decision framework, not “it depends” with no criteria. Pros: Elastic scale-out; at-least-once default with offset commit. Cons: Rebalance pauses consumption; sticky assign reduces churn.
Follow-up questions
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Parent context — Consumer Groups and Rebalance
Use Consumer Groups and Rebalance as the core idea. Example shape: 6 partitions, 3 consumers → each gets 2 partitions; add 4th consumer triggers rebalance..
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