Part IX — Monitoring and Diagnostics

Gain operational visibility into your Java applications with modern monitoring, logging, and diagnostic tools.

What You'll Learn

Build observable applications from day one. Expose metrics and system state through JMX for management tools, implement structured logging practices that work at scale, and use diagnostic tools for real-time troubleshooting in production environments.

Chapters in This Part

Chapter 30. JMX and MBeans

Expose application state and metrics through Java Management Extensions (JMX). Learn how to implement custom MBeans, configure remote access, and integrate with popular monitoring platforms like Prometheus and New Relic.

Chapter 31. Logging

Implement robust, structured logging with modern frameworks. Understand log levels, output formats, performance considerations, and how to design logging strategies that provide visibility without overwhelming your system with noise.

Chapter 32. Diagnostic Tools

Master built-in diagnostic tools: jps, jstat, jvmstat, jcmd, and more. Learn how to generate heap dumps, extract thread information, trigger GC, and diagnose issues when your application is running in production.