Advanced Java & JVM Internals Roadmap
A comprehensive learning path for senior Java engineers to master JVM internals, memory management, bytecode manipulation, concurrency patterns, and performance tuning.
Posts tagged with #advanced-java
JVM Bytecode Verification: Type Checking and Stack Map Frames
A technical deep dive into the JVM bytecode verifier, covering type checking, stack map frames, the four verification stages, and what happens when verification fails.
CDS and AppCDS: Class Data Sharing for Faster JVM Startup
A guide to Class Data Sharing in the JVM, covering how CDS and AppCDS work, how to create shared archives, and how they reduce startup time and memory footprint.
JVM in Containers: Cgroup Memory Limits and Heap Sizing
A guide to how the JVM detects container memory limits, configures heap accordingly, and avoids pitfalls when running Java in Docker and Kubernetes.
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.
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.
JVM Stack Walking API: Fast Stack Traversal and Security Context
A guide to the JVM Stack Walking API showing how to efficiently traverse stack frames, access local variables, and extract security context without the overhead of traditional stack trace capture.