Monitoring
Monitoring is the practice of continuously observing and measuring the performance, health, and behavior of software systems, infrastructure, and applications in real-time. It involves collecting metrics, logs, and traces to detect issues, ensure reliability, and optimize performance. This enables proactive incident response, capacity planning, and data-driven decision-making for operational excellence.
Developers should learn monitoring to build resilient, scalable systems that meet service-level objectives (SLOs) and reduce downtime. It is essential for production environments, DevOps workflows, and cloud-native applications to quickly identify bottlenecks, debug failures, and improve user experience. Use cases include application performance monitoring (APM), infrastructure health checks, and security threat detection.