How does Consumer Groups and Rebalance change at 10× traffic?

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Use the parent topic “Consumer Groups and Rebalance” as context. Cover testing approach, production metrics, or scale impact as asked — then refine with AI Mentor below.

Parent context — Consumer Groups and Rebalance

Common mistakes: Long processing without pause; committing before side effects complete. Best practices: Idempotent consumers; static membership; cooperative sticky assignor.

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