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https://issues.apache.org/jira/browse/SOLR-667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12643535#action_12643535
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Noble Paul commented on SOLR-667:
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bq.This leads to a few response times that are over 1 second, but the average
is way down closer to 20ms.
yeah you are right.
there is one more feature in ConcurrentLRUCache whcih enables cleanups to be
done in a new thread .FastLRUCache is not using it yet .I'll give a patch soon
. This will take care of that 1 sec delay.
> Alternate LRUCache implementation
> ---------------------------------
>
> Key: SOLR-667
> URL: https://issues.apache.org/jira/browse/SOLR-667
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 1.3
> Reporter: Noble Paul
> Assignee: Shalin Shekhar Mangar
> Fix For: 1.4
>
> Attachments: ConcurrentLRUCache.java, ConcurrentLRUCache.java,
> ConcurrentLRUCache.java, SOLR-667.patch, SOLR-667.patch, SOLR-667.patch,
> SOLR-667.patch, SOLR-667.patch, SOLR-667.patch
>
>
> The only available SolrCache i.e LRUCache is based on _LinkedHashMap_ which
> has _get()_ also synchronized. This can cause severe bottlenecks for faceted
> search. Any alternate implementation which can be faster/better must be
> considered.
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