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https://issues.apache.org/jira/browse/MYFACES-3654?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Struberg resolved MYFACES-3654.
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Resolution: Fixed
Fix Version/s: 2.2.0
> 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
> Fix For: 2.2.0
>
>
> 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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