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Tracks/CI/CD & Release Engineering
Advanced 1 minScenario based

Walk me through a production deployment and rollback strategy.

Scenario

Microservices on Kubernetes, using Helm charts, GitHub Actions CI/CD, with PostgreSQL backend. The service handles 5,000 RPM.

The interviewer asks

“You're releasing a major version of a backend API service to production. Describe your deployment strategy, health checks, and exactly what you'd do if something goes wrong 10 minutes after release.”

The 30-second answer

Use rolling or canary deployment, with automated health checks and readiness probes. Define SLO-based rollback triggers. Roll back with helm rollback or kubectl rollout undo. Always have a tested runbook.

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  • The voiced mock interview (1 min)
  • The full senior answer, step by step
  • Animated architecture diagrams
  • The whole conversation, 4 turns
  • Deep dive: how it works, mistakes, risks and trade-offs
  • 1 copy-ready command snippet
  • 3 follow-up questions they'll ask next
  • A self-check of 5 things interviewers listen for
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More CI/CD & Release Engineering interview questions

  • How do you enforce approvals and segregation of duties in CI/CD without slowing delivery to a crawl?
  • Production can only change Saturday 02:00 to 05:00. How do you run releases so the window stops failing?
  • Design a deployment pipeline where changes that touch money get extra safety without slowing every team down
  • A deploy passed canary cleanly, then payment success slowly decays over an hour. How do you debug it?
  • Design a deployment system that rolls out thousands of services safely with automatic canary analysis
  • A release passed automated canary analysis, but a member-facing metric dropped a day later. What did the canary miss?
All CI/CD & Release Engineering questions

Linux commands for this track

  • bash: variables Shell variables: assign, quote, default and export
  • bash: if Conditions: if, elif, else, test brackets and case
  • bash: loops Loops: for, while read, until and retry
  • bash: functions Functions: name a block, pass arguments, return a status
  • bash: arrays Arrays: lists and key-value maps in bash
  • bash: exit codes Exit codes, $?, set -euo pipefail and trap
  • bash: redirection Redirection: stdout, stderr, 2>&1, /dev/null and here-docs
  • bash: arguments Script arguments: $1, $#, "$@", shift and getopts