Metric Monitoring
Metric monitoring is the practice of collecting, tracking, and analyzing quantitative data points (metrics) from software systems, infrastructure, and applications to assess performance, health, and reliability. It involves using tools to visualize metrics in dashboards, set up alerts for anomalies, and gain insights for troubleshooting and optimization. This concept is fundamental in DevOps, SRE (Site Reliability Engineering), and operational observability.
Developers should learn metric monitoring to ensure system reliability, detect issues proactively, and make data-driven decisions for performance improvements. It is essential for maintaining uptime in production environments, scaling applications efficiently, and meeting service-level objectives (SLOs). Use cases include monitoring server CPU usage, application response times, error rates, and business metrics like user sign-ups.