monitoring-observability

Comprehensive monitoring setup with metrics collection, log aggregation, alerting, and health checks. Application Instrumentation (Node.js): prometheus.yml : alert_rules.yml : Winston (Node.js) : dashboard.json (example): Advanced Health Check : #monitoring #observability #Prometheus #Grafana #logging #metrics #infrastructure - Covers Prometheus for metrics instrumentation, Grafana dashboards for visualization, and structured logging with Winston for log aggregation - Includes pre-built alert rules for high error rates, slow response times, pod failures, and resource saturation - Provides advanced health check endpoints that test database, cache, and external API dependencies with latency tracking - Implements the four golden signals framework: latency percentiles, request volume, error rates, and resource utilization - Before Production Deployment : Essential monitoring system setup - Performance Issues : Identify bottlenecks - Incident Response : Quick root cause identification - SLA Compliance : Track availability/response times - Structured Logging : JSON format logs - Metric Labels : Maintain uniqueness (be careful of high cardinality) - Prevent Alert Fatigue : Only critical alerts - Do Not Log Sensitive Data : Never log passwords, API keys - Excessive Metrics : Unnecessary metrics waste resources - Define SLO : Clearly define Service Level Objectives - Write Runbooks :...