Observability: Metrics, Logs, and Traces

A Pod restarts. Latency spikes. Users complain. You check metrics and see elevated error rates. You pull logs and find an OOM kill. You trace the request and discover the root cause: a downstream service timing out under load. No single signal gave you the full picture. That is observability.

Monitoring tells you when something known breaks. Observability lets you ask questions you never anticipated about systems you cannot fully predict. In a distributed Kubernetes environment where a single user request can traverse dozens of services, observability is not a nice-to-have. It is how you debug production.