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 locks, adaptive spinning, lock elimination, lock coarsening, biased locking, and lightweight locking.

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 queue and a state variable to handle synchronization.

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, they do so at the expense of performance, blocking all operations regardless of type. This results in unnecessary blocking between...