Q3 — How do you design for failure in a distributed system?
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Transcript (Q3)
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InterviewerHow do you design for failure in a distributed system?
CandidateI start by assuming that components will fail, and design the system so that a single failure doesn’t cascade into a full outage.
InterviewerCan you give a concrete example?
InterviewerHow do you decide on the right tradeoffs?
CandidateIt depends on the service’s reliability goals and cost constraints. For some paths we prefer fast failure and retries, for others we use graceful degradation. We also run failure injection tests before major rollouts.
InterviewerWhat would you monitor after deployment?
