high-scale-lib

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A collection of Concurrent and Highly Scalable Utilities. These are intended as direct replacements for the java.util.* or java.util.concurrent.* collections but with better performance when many CPUs are using the collection concurrently. Single-threaded performance may be slightly lower.

The other utilities do not have direct JDK replacements includes

  • NonBlockingHashMap - Fast, concurrent, lock-free HashMap. Linear scaling to 768 CPUs
  • NonBlockingHashMapLong - Same as above, but using primitive 'long' keys
  • NonBlockingHashSet - A Set version of NBHM
  • NonBlockingSetInt - A fast fully concurrent BitVector
  • Counter - A simple counter that scales linearly even when extremely hot

http://sourceforge.net/projects/high-scale-lib/

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