JMX and MXBeans: JVM Hotspot Diagnostics and Custom MBeans
Learn how to use JMX and MXBeans to monitor JVM memory pools, perform hotspot diagnostics, and build custom MBeans for production observability.
Posts in technical
JVM Architecture Overview: Understanding the Java Virtual Machine
A deep dive into the JVM architecture covering Class Loader, Runtime Data Areas, and Execution Engine components that power Java applications.
JVM Flags Explained: Standard, -X, and -XX Options for Tuning
Master JVM flags configuration with this comprehensive guide covering standard, -X, and -XX options for production Java performance tuning.
JVM Startup and Shutdown: Bootstrap, Initialization Hooks, and Shutdown Sequence
Understanding JVM lifecycle: bootstrap process, initialization hooks, shutdown sequence, and how to implement lifecycle callbacks for graceful shutdown.
JVM Bytecode Verification: The JVMS Compliance Process
Understanding the Java Virtual Machine Specification compliance: bytecode verification phases, type checking, stack overflow prevention, and security guarantees.
JVMTI Agents: Profiling and Debugging with the JVM Tool Interface
Explore the JVM Tool Interface for building profiling, debugging, and monitoring agents that hook deep into the JVM runtime.
Method Invocation Bytecode
Deep dive into JVM method invocation: invokevirtual, invokestatic, invokespecial, invokeinterface, and invokedynamic explained per the JVM Specification.
Java 9 Module System: Boundaries, Encapsulation, and requires/exports
A guide to the Java 9 Module System covering module boundaries, strong encapsulation, the requires and exports directives, and practical migration patterns.
Runtime Data Areas: Heap, Stack, and Method Area Internals
Understanding JVM memory architecture: Heap, JVM Stack, Method Area, PC Registers, and Native Method Stacks - what they store and how they interact.
Java Security Manager: Permission Checks and Policy Files
A deep dive into the Java Security Manager, policy file configuration, permission checks, and how to properly sandbox untrusted code in the JVM.