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Aporeon interview preparation

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Observability & Production Incidents

Incident Triage

First response, slow API diagnosis, failed releases, dependency latency, missing logs, queue backlogs, and auth failure spikes.

7 drillsPractice one at a timeOrdered pathDebugging scenario

Recommended start

First 15 Minutes

Explains initial incident triage: confirm impact, mitigate, assign roles, preserve evidence, and communicate.

Medium~10 minStep 1 of 7

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1First 15 MinutesRecommended startExplains initial incident triage: confirm impact, mitigate, assign roles, preserve evidence, and communicate.Debugging scenarioMedium~10 min.NETApplication InsightsASP.NET CorePractice 2Slow APIExplains a telemetry-driven path from slow endpoint symptoms to database, cache, dependency, CPU, or payload root cause.Debugging scenarioMedium~10 min.NETApplication InsightsASP.NET CorePractice 3500 SpikeExplains how to triage post-release 500 errors using deployment correlation, logs, traces, feature flags, and rollback safety.Debugging scenarioMedium~10 min.NETApplication InsightsASP.NET CorePractice 4Dependency LatencyExplains how to diagnose and mitigate a downstream dependency slowing the API through timeouts, retries, and degraded behavior.Debugging scenarioMedium~10 min.NETApplication InsightsASP.NET CorePractice 5Missing LogsExplains how to troubleshoot absent logs or telemetry by checking configuration, sampling, sinks, levels, deployment, and correlation.Debugging scenarioMedium~10 min.NETApplication InsightsASP.NET CorePractice 6Queue BacklogExplains how to investigate queue age, backlog, worker health, poison messages, dependency failures, and safe catch-up.Debugging scenarioMedium~10 min.NETApplication InsightsASP.NET CorePractice 7Auth FailuresExplains how to diagnose 401/403 spikes across token validation, identity provider issues, clock skew, deployment changes, and abuse.Debugging scenarioMedium~10 min.NETApplication InsightsASP.NET CorePractice

Practice order

7 drillsOne at a time

1First 15 MinutesUp next / Medium / ~10 min
2Slow APIMedium / ~10 min
3500 SpikeMedium / ~10 min
4Dependency LatencyMedium / ~10 min
5Missing LogsMedium / ~10 min
6Queue BacklogMedium / ~10 min
7Auth FailuresMedium / ~10 min