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Jan 21, 2025 · Fundamentals
Understanding CAS: Solving the ABA Problem and Other Pitfalls in Java Concurrency
This article explains the classic ABA issue in Java's Compare‑And‑Swap (CAS) operations, outlines why long spin loops and single‑variable limitations can degrade performance, and presents practical solutions such as AtomicStampedReference, LockSupport, ReentrantLock, and optimized data structures to mitigate these challenges.
ABA problemCASJava concurrency
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