Troubleshooting Microservices with OpenTelemetry Distributed Tracing
Distributed tracing doesn’t just show you what happened. It shows you why things broke. While logs tell you a service returned a 500 error and metrics show latency spiked, only traces reveal the full chain of causation: the upstream timeout that triggered a retry storm, the N+1 query pattern that saturated your connection pool, or the missing cache hit that turned a 50ms call into a 3-second database roundtrip.