A high degree of contention in any application will have load increases and as a result degraded performance. The cost of uncontended synchronization has been reduced with each and every successive version of JVM. The contended synchronization is expensive and can be detrimental to the scalability. Using a high degree of contention will increase the load on the application as a result the performance will go down. With this article you can learn how to improving scalability, in your programs with its several techniques.
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