advancedMultithreading & Concurrency361 of 436
AtomicInteger & CAS — the compare-and-swap loop, lock-free counters, when to reach for LongAdder
Tests whether you can explain the CAS retry loop (read, compute, compare-and-swap, retry on failure) and know LongAdder outperforms AtomicInteger under heavy contention by striping the counter across cells and summing them only on read.
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