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Home/Tracks/Production Incidents
Track 10

Production Incidents interview questions

Incident response, postmortems, runbooks, on-call, escalation procedures.

10 interview questions41 min of mock interviews35 Linux lessons

Interview questions

Each one is a full mock interview: listen to it, then study the senior answer, diagrams, follow-ups and self-check.

Open in Interview Prep
AdvancedTroubleshooting 4 minThe end-of-day settlement batch used to finish by 06:00 and now ends at 09:00. How do you find out why? Regulated trading platform · Round 2 Start the interview AdvancedTroubleshooting 4 minThe database failed over, but the application keeps talking to the old primary. What do you do? Regulated trading platform · Round 2 Start the interview AdvancedTroubleshooting 4 minPayment success rate has dropped for one bank only. How do you find out whose problem it is and protect users? UPI payments at festival peak · Round 2 Start the interview AdvancedTroubleshooting 5 minConsumer lag keeps climbing, consumers are flat out and brokers look fine. How do you find the bottleneck? Social feed at hyperscale · Round 2 Start the interview ExpertTroubleshooting 4 minPlayback failures spike for 3% of APAC viewers while CPU, memory and pods look fine. How do you triage it? Live sports streaming · Round 2 Start the interview ExpertTroubleshooting 4 minKafka lag hits two minutes during a surge, but the consumers are idle. Where do you look? Live sports streaming · Round 2 Start the interview ExpertTroubleshooting 4 minp99 latency on the Redis session store jumps 40x mid-match while p50 is fine. How do you find the cause? Live sports streaming · Round 2 Start the interview ExpertTroubleshooting 4 minA payment partner slows down and your own retries turn it into an outage. How do you stop the storm? UPI payments at festival peak · Round 2 Start the interview ExpertTroubleshooting 4 minThe ledger database failed over mid-transaction. How do you prove nothing was lost or applied twice? UPI payments at festival peak · Round 2 Start the interview ExpertTroubleshooting 4 minA datacenter drain has been stuck at 80 percent for 40 minutes. How do you find and move the last 20 percent safely? Social feed at hyperscale · Round 2 Start the interview

Practise on Linux

Animated lessons for the commands this track relies on, with practice tasks for each.

15Debugging & Diagnosticsstraceltracelsofdmesgperfgdb+17 lessons 23Performance Tuningsarmpstatpidstatsysctlulimitnumactl6 lessons 13Text Processinggrepsedawkcutsortuniq+410 lessons 03Process Managementpstophtopkillkillallpkill+612 lessons
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