Logging & Monitoring

Spring Boot Actuator provides production-ready monitoring endpoints for health checks, metrics, and runtime management, with /health for Kubernetes probes, /prometheus for Grafana dashboards, and /loggers for runtime log level changes.

Spring Boot uses SLF4J as the logging facade with Logback as the default implementation, where parameterized messages avoid string concatenation, MDC attaches correlation IDs to every log line, and AsyncAppender prevents disk I/O from blocking request threads.