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Fixes to prevent locking and high CPU #27

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Fixes to prevent locking and high CPU #27

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@minhhai2209 minhhai2209 commented Apr 22, 2016

Fixes to prevent locking and high CPU:

  • cache XPathFactory.newInstance() in ThreadLocal - avoid thread locking
  • replace HashMap with ConcurrentHashMap in MetaModel - HashMap.put causes high CPU usage when being used concurrently

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