Advanced DevOps
Monitoring & Observability
Logging, metrics, alerting, and debugging production systems.
Understanding Production
Observability helps you understand what's happening in your systems through logs, metrics, and traces.
Three Pillars
- Logs: Event records with context
- Metrics: Numerical measurements over time
- Traces: Request flows across services
Key Metrics
- Latency: Response time (p50, p95, p99)
- Traffic: Requests per second
- Errors: Error rate percentage
- Saturation: Resource utilization
Alerting Best Practices
- Alert on symptoms, not causes
- Avoid alert fatigue
- Have runbooks for each alert
- Use severity levels appropriately
Tools Stack
- Metrics: Prometheus, Datadog
- Logs: Loki, Elasticsearch
- Traces: Jaeger, OpenTelemetry
- Dashboards: Grafana