On-callHardoc-p083

Subject Incident responseLevel Senior–Staff~20 minCommon in Reliability & on-call interviewsIndustries Technology, Software development

Question

A bad configuration was pushed to mobile/desktop clients, and now the clients are broken or crash on launch — and they cache the config, so they don't pick up a fix automatically. How do you respond?

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

Diagram & narrate the incident

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Run or narrate your approach, then ask the coach.