Maybe it is time you replace your AtomicLong with a LongAdder? Both classes were designed to solve the same critical issue: managing thread-safe 64-bit counters in a concurrent environment. From the official documentation and various public benchmarks, it is clear…
In our previous post, we discussed some advanced spinlock mechanisms in Java. We explored the advantages and drawbacks of popular spinning mechanisms, from the simple Test-And-Set (TAS) and cache-aware Test-Test-And-Set (TTAS), to fairness-oriented Ticket locks, and finally the scalable queue-based…
I came across the paper “The Silently Shifting Semicolon.” The authors argue that a safe and productive language should make sequential consistency a default guarantee across threads, not only within a single thread. That is, if a program says A;…
