DORA metrics
Name the four DORA metrics and how a platform team might improve a low deployment frequency.
Answers use simple, clear English.
Quick interview answer
Deployment frequency, lead time for changes, change failure rate, MTTR. To raise frequency: smaller PRs, trunk-based dev, reliable CI, feature flags, automated deploys to staging, reduce manual gates that don’t add safety. Improve failure rate/MTTR in parallel with canaries and better observability — don’t just ship faster blindly.
Detailed answer
Deployment frequency, lead time for changes, change failure rate, MTTR. To raise frequency: smaller PRs, trunk-based dev, reliable CI, feature flags, automated deploys to staging, reduce manual gates that don’t add safety. Improve failure rate/MTTR in parallel with canaries and better observability — don’t just ship faster blindly.
Real example & use case
Weekly → daily deploys after splitting monolith release train and adding flags.
Pros & cons
Pros: evidence-based improvement. Cons: metrics can be gamed.