JVM Heap Memory: Young Gen, Old Gen, Metaspace, and Object Headers
A deep dive into JVM heap memory organization including Young Generation, Old Generation, Metaspace, and object header internals for performance optimization.
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Heap Walking and Allocation Tracking: TLABs and Heap Analysis
Understand how the JVM allocates memory with TLABs, how to track allocations with low overhead, and how heap walking tools analyze object graphs.
Java Bytecode Fundamentals
Explore the low-level representation of Java code: op codes, the stack-based JVM architecture, and local variable table mechanics.
Java Flight Recorder: Continuous Monitoring and Diagnostics
Learn how Java Flight Recorder captures low-level diagnostics, profiling data, and continuous monitoring events from the JVM in production environments.
Java Memory Model: Happens-Before, Volatile, and Final Fields
Understanding happens-before guarantees, volatile field semantics, and final field safety in the Java Memory Model for correct concurrent code.
Java Mission Control: Flight Recordings and Heap Analysis
Complete guide to JDK Mission Control for flight recordings, heap analysis, and identifying hotspot methods in production Java applications.
java.util.concurrent: Thread Pools, ForkJoinPool, Synchronizers
Master Java's java.util.concurrent: Executors, ForkJoinPool, CountDownLatch, CyclicBarrier, Phaser, and thread pool patterns for high-performance apps.
JIT Compilation Internals
Understand how the JVM's Just-In-Time compiler detects hot code, applies compilation thresholds, and manages the code cache for peak performance.
JIT Optimization: Inlining, Escape Analysis, Dead Code Elimination
Understand how JVM JIT compiler optimizes code through inlining, escape analysis, and dead code elimination for peak application performance.
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.