high-scale-lib

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