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Monitoring & Observability

Observability is the practice of understanding a system through metrics, logs, traces, and alerts. This section groups the tools that usually appear together in a production monitoring stack.

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How To Read This Section

  • Start with Prometheus and Grafana if you want a self-hosted metrics stack.
  • Add Loki and Fluentd when logs need to be collected and queried centrally.
  • Use Jaeger or OpenTracing for request-level tracing across services.
  • Use Datadog when you want a managed platform instead of running the stack yourself.
  • Keep Nagios in mind for older environments that still rely on host and service checks.