Code Room
On-callMedium
Question
A feature works perfectly in testing but breaks in production, and the difference turns out to be scale — the data volume or traffic prod has that test never did. How do you handle it?
What a strong answer looks like
Stop the bleeding first (mitigate), then form hypotheses from real signals. Separate root cause from symptom, communicate status as you go, and close with what prevents a repeat.
Learn the concepts
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Run or narrate your approach, then ask the coach.