Monitoring & Observability

Build comprehensive observability for your systems.

The Three Pillars

1. Metrics (Prometheus)

# Instrument your app
http_requests_total{method="GET", endpoint="/api/users", status="200"} 1024
http_request_duration_seconds{quantile="0.95"} 0.235

2. Logging (Loki / ELK)

• Structured JSON logging
• Include: timestamp, level, service, trace_id, message
• Centralized log aggregation
• Log levels: DEBUG < INFO < WARN < ERROR < FATAL