observability-learn

@lushly-dev

Guides implementation of structured logging, metrics collection, and distributed tracing for production services. Covers the three pillars of observability (logs, metrics, traces), OpenTelemetry integration, correlation ID propagation, alerting thresholds, and common anti-patterns. Use when adding monitoring to a service, debugging production issues, improving error visibility, setting up alerting, or instrumenting business metrics. Triggers: observability, logging, metrics, tracing, monitoring, OpenTelemetry, alerts, instrumentation, structured logs, correlation ID.