Observability

Synopsis Multi-CDN monitoring connects user-facing service level indicators to routing decisions and outcomes. Stable aggregation, alerts, and dashboards must expose harm early and provide evidence for changes and incident decisions. Objectives and scope Monitoring must show whether content is correct, whether latency and reliability meet commitments, and whether routing decisions help users. It must separate symptoms from causes, include regional and network context, and expose differences between providers. It should remain simple enough that on-call engineers can act without guesswork and detailed enough to support post-incident analysis. ...

Synopsis Multi-CDN routing uses real user measurements, synthetic probes, provider health, routing data, and service logs. Aggregation and alerting must turn those inputs into stable decisions, with a path change only when evidence supports it. Measurement goals All measurement should support a small set of goals. Confirm that users receive correct content with acceptable latency and reliability. Detect faults and degradations fast enough to protect users. Provide data that is stable enough for routing but sensitive enough to catch regressions. Keep the cost and complexity of the system proportional to its value. ...