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https://issues.apache.org/jira/browse/MYFACES-3484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leonardo Uribe resolved MYFACES-3484.
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Resolution: Fixed
Fix Version/s: 2.1.7
2.0.13
> [perf] Use solr ConcurrentLRUCache instead Collections.synchronizedMap
> -----------------------------------------------------------------------
>
> Key: MYFACES-3484
> URL: https://issues.apache.org/jira/browse/MYFACES-3484
> Project: MyFaces Core
> Issue Type: Improvement
> Components: JSR-314
> Reporter: Leonardo Uribe
> Assignee: Leonardo Uribe
> Fix For: 2.0.13, 2.1.7
>
>
> Some tests shows that use Collections.synchronizedMap for create a LRU cache
> cause some contention.
> We have 3 places susceptibles for this optimization:
> - org.apache.myfaces.shared.resource.ResourceHandlerCache
> - org.apache.myfaces.shared.application.DefaultViewHandlerSupport
> - org.apache.myfaces.lifecycle.DefaultRestoreViewSupport
> Instead use Collections.synchronizedMap, we can use solr
> org.apache.solr.util.ConcurrentLRUCache. For example:
> _checkedViewIdMap = new ConcurrentLRUCache<String, Boolean>((maxSize * 4 + 3)
> / 3, maxSize);
> We set the lower mark on maxSize and the upper mark at 1.33 maxSize. Solr
> implementation is very good for these cases. In typical situations, user will
> set maxSize to a value that prevents cache cleanup.
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