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https://issues.apache.org/jira/browse/SOLR-5080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13721490#comment-13721490
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Erick Erickson commented on SOLR-5080:
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I don't really understand this. You'll have to outline _what_ cases you're
talking about before this gets much traction. Caches are invalidated whenever a
new searcher is opened, and since this happens whenever a hard commit
(openSearcher=true) or a soft commit happens, I really don't see how this is a
problem. And since you can't search anything that hasn't had a searcher opened
on it, I don't see the problem.
> Ability to Configure Expirable Caches (use Google Collections -
> MapMaker/CacheBuilder for SolrCache)
> ----------------------------------------------------------------------------------------------------
>
> Key: SOLR-5080
> URL: https://issues.apache.org/jira/browse/SOLR-5080
> Project: Solr
> Issue Type: New Feature
> Reporter: Kranti Parisa
>
> We should be able to configure the expirable caches, especially for
> filterCaches. In some cases, the filterCaches are not valid beyond certain
> time (example 5 minutes).
> Google collections has MapMaker/CacheBuilder which does allow expiration
> http://google-collections.googlecode.com/svn/trunk/javadoc/com/google/common/collect/MapMaker.html
> http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/cache/CacheBuilder.html
> SolrCache, LRUCache etc can be implemented with MapMaker or CacheBuilder
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