Follow-up · depth 4
What trade-offs come with Consumer Groups and Rebalance?
What trade-offs come with Consumer Groups and Rebalance?
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Audio N/AQuick interview answer
Pros: Elastic scale-out; at-least-once default with offset commit. Cons: Rebalance pauses consumption; sticky assign reduces churn.
Detailed answer
Trade-offs for Consumer Groups and Rebalance: Pros: Elastic scale-out; at-least-once default with offset commit. Cons: Rebalance pauses consumption; sticky assign reduces churn. Decision rule: choose Consumer Groups and Rebalance when the benefits outweigh operational cost for your SLO. 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
Strong answers state both sides and when you would pick an alternative. 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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