Testcontainers for Real Database Integration Tests
Run integration tests with real PostgreSQL, MySQL, Redis, and Kafka services using Testcontainers. Learn setup, networking, CI configuration, and cleanup.
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What is Spring Boot? AutoConfig, Starters & Embedded Servers
Understand Spring Boot fundamentals: how auto-configuration works, using starter POMs, deploying with embedded servers, and production-ready features.
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.
Async-Profiler: Low-Overhead CPU and Memory Profiling
Learn async-profiler for low-overhead CPU and memory profiling in production. Generate flame graphs, analyze allocations, and diagnose JVM bottlenecks.
Java Atomics and VarHandle: Low-Level Concurrency
Understanding Java atomic operations: AtomicInteger, AtomicReference, VarHandle, compareAndSet, atomics vs locks, and lock-free programming patterns.
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.
Class Loader Subsystem: Loading, Linking, and Initialization
Deep dive into the JVM Class Loader subsystem covering loading, linking, initialization phases and the ClassLoader hierarchy with parent delegation model.
CMS and G1 Collectors: Low-Latency Garbage Collection
How CMS and G1 garbage collectors reduce pause times through concurrent marking, region-based heap layout, and incremental compaction.
Common Bytecode Instructions
Master the most frequently used JVM bytecode instructions: aload, astore, invoke, return, and arithmetic operations.