Mark Struberg created MYFACES-3654:
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Summary: implement small threadsafe Random algorithm
Key: MYFACES-3654
URL: https://issues.apache.org/jira/browse/MYFACES-3654
Project: MyFaces Core
Issue Type: Sub-task
Components: JSR-344
Affects Versions: 2.2.0
Reporter: Mark Struberg
Assignee: Mark Struberg
java.util.Random always locks and thus creates a bottleneck in heavy threaded
server scenarios. In Java 7 a new ThreadLocalRandom got introduced which fixes
that but we cannot use this as we still need to support java5 and 6.
The algorithm used in java.util.Random also is not the best in terms of
spreading.
I propose to introduce a small XorShift random generator which has a very good
spreading and is vastly faster than java.util.Random as well.
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