JMX monitoring + Java custom metrics

The tutorial provides a comprehensive guide to instrumenting Java applications using Java Management Extensions (JMX) to monitor application metrics such as memory and CPU usage, thread counts, and API usage. It explains the implementation of JMX metrics through Managed Beans (MBeans) and their role in exporting data to a monitoring system, making large-scale Java applications easier to troubleshoot and integrate with external tools. The document outlines the various types of MBeans and their specific use cases, illustrating with code examples how to create and register MBeans within the Java platform. It also discusses the benefits of using Sysdig Monitor for collecting JMX metrics, particularly in containerized environments, highlighting its ability to automatically discover microservice components and display metrics without extensive code modifications. Additionally, the text touches on the integration of JMX metrics with other monitoring systems like Prometheus, enabling a unified view of application performance and health.