Understanding the Four Golden Signals—Latency, Errors, Traffic, and Saturation—is key to maintaining a healthy system. In this video, we break down each metric and demonstrate their impact using an OpenTelemetry demo running on Docker and EC2. We also explore Grafana dashboards, PromQL queries, and feature flags to see how changing configurations affects system
performance.
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Otel Demo - https://opentelemetry.io/docs/demo/
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📌 Chapters:
0:00 - Introduction to Golden Signals
0:20 - Setting Up the Demo
0:42 - Latency
1:25 - Errors
2:02 - Traffic
2:24 - Saturation
2:50 - Feature Flags Experiment
3:27 - Impact of Feature Flags on Metrics
