Senior Xiao Ying

Feb 6, 2026 · Fundamentals

StampedLock: The High‑Performance Java 8 Lock That Outpaces ReentrantReadWriteLock

StampedLock, introduced in Java 8, provides three lock modes—including an optimistic read that uses a 64‑bit stamp—to achieve higher throughput than ReentrantReadWriteLock in read‑heavy workloads, and the article explains its internal state, usage patterns, code examples, and important limitations.