Java Concurrency Articles

Project Reactor: Explained with Examples I will give you a clear, beginner-friendly explanation of Project Reactor, based on the official documentation. We’ll cover the basics, core types, common operators, and...

Java 21 Virtual Threads vs FixedThreadPool: Performance Comparison with 10,000 Tasks In Java 21, Virtual Threads have become a GA (General Availability) feature. The main goal is to make each...

Java ThreadLocal Explained: How ThreadLocal Works Internally ThreadLocal provides thread-local variables. Each thread accessing a ThreadLocal variable maintains an independent copy of the variable, preventing issues caused by shared mutable...

The Secret Sauce Behind ThreadPoolExecutor in Java

In-Depth Comparison of ArrayBlockingQueue and LinkedBlockingQueue in Java Java’s blocking queues are critical components for implementing producer-consumer patterns in concurrent programming.

ConcurrentHashMap Evolution in Java ConcurrentHashMap is a high-performance, thread-safe Map implementation from the java.util.concurrent package.

Smart Locking in Java: From Spin to Virtual Threads The Java Virtual Machine (JVM) uses several smart techniques to make multithreaded programs run faster and more efficiently. These include spin...

High-Performance Read-Write Lock in Java — Understanding StampedLock Introduced in Java 8, StampedLock is a high-performance read-write lock designed to address the writer starvation issue present in ReentrantReadWriteLock.

AQS Made Simple: How Java’s Locking Framework Works AbstractQueuedSynchronizer (AQS) is a foundational framework in Java for building locks and synchronizers like ReentrantLock, CountDownLatch, Semaphore, etc. It manages a FIFO...

In-Depth Analysis of Java’s ReentrantReadWriteLock with Modern Enhancements In multi-threaded applications, it’s common for read operations to outnumber write operations. While traditional mutual exclusion locks (e.g., ReentrantLock) ensure thread safety,...

Understand ReentrantLock: How It Works and How It Differs from synchronized ReentrantLock is a powerful synchronization mechanism in Java, part of the java.util.concurrent.locks package. Compared with the synchronized keyword, ReentrantLock...

Understanding synchronized in Java: Mechanism and Modern Implementation

Java Concurrency Tools: What I Use and Why Featuring Semaphore, CyclicBarrier, CountDownLatch, and modern concurrency tools like Phaser, Exchanger, and CompletableFuture.