Observability
24 practice items · needed by 6 roles
Easy 7Medium 12Hard 5
Practice questions
- Why structured logs helpeasy
- Liveness probe restarts every podmedium
- Following one request across servicesmedium
- Fine average, unhappy usersmedium
- Tracing one failed checkoutmedium
- How Prometheus collects metricseasy
- Counter vs gaugeeasy
- SLI, SLO and SLAeasy
- Deciding to promote a canarymedium
- Per-second request rate in PromQLmedium
- Prometheus memory keeps growingmedium
- Choosing what to page onmedium
- Why run an OpenTelemetry Collectormedium
- Traces break between servicesmedium
- Canary on a low-traffic servicehard
- Alert silent when the service dieshard
- SLO burn-rate alertinghard
- Logging bill tripledhard
- The four golden signalseasy
- The RED methodeasy
- Why structured logs?easy
- Why run an OpenTelemetry Collector?medium
- Debugging a bad agent answermedium
- Evals green, users unhappyhard