How does Rails handle large-scale system observability with metrics and tracing pipelines?

Rails integrates metrics, logs, and tracing systems into centralized observability platforms.

Modern Rails systems emit metrics (latency, throughput), logs (structured JSON), and traces (request flows). These are collected by systems like Prometheus, Grafana, and OpenTelemetry pipelines. This allows engineers to detect anomalies, debug distributed issues, and monitor SLAs in real time. Correlation IDs unify logs and traces across services.