What metrics prove memo, useMemo, useCallback is healthy in prod?

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Use the parent topic “memo, useMemo, useCallback” as context. Cover testing approach, production metrics, or scale impact as asked — then refine with AI Mentor below.

Parent context — memo, useMemo, useCallback

Mitigate first, then root-cause. Check symptoms against: Memoizing everything; useCallback with empty deps capturing changing state..

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