Open Source Observability Stack: Prometheus, Grafana, and OpenTelemetry Guide

⚡ Key Takeaways

• {'point': 'Three Pillars Work Together', 'detail': 'Metrics (Prometheus) show what is happening, logs show why, and traces (via OpenTelemetry) show the path a request takes through distributed services.'} 𝕏
• {'point': 'OpenTelemetry Prevents Vendor Lock-in', 'detail': 'Instrument once with OpenTelemetry APIs, then export to any backend. Switching from Jaeger to Datadog no longer requires rewriting instrumentation code.'} 𝕏
• {'point': 'RED and USE Methods Guide Dashboard Design', 'detail': 'Use Rate/Errors/Duration for services and Utilization/Saturation/Errors for infrastructure resources to build focused, actionable Grafana dashboards.'} 𝕏