Optimistic Locking with StampedLock in Java

Locks are one of the most important concepts in concurrent programming, and they provide us with a way to have safe access to shared resources. Traditional synchronization mechanisms, like synchronized blocks or ReentrantLock, provide safety but often at the cost of performance, especially in read-heavy scenarios. StampedLock was introduced in Java 8, But many Java developers are unaware of it! It offers a sophisticated alternative designed to handle such cases more efficiently. In this article, we will take a deep look at StampedLock and how to use it to implement Optimistic Locking.

· What is a StampedLock? ∘ Understanding Optimistic Locking · Code Example · Advantages of Optimistic Locking ∘ Considerations · Final Thoughts

The StampedLock is part of the java.util.concurrent.locks package and manages access through stamps that represent the lock state. It provides three main modes of locking: write, read, and optimistic read:

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