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From "Shawn Heisey (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2889) Implement Adaptive Replacement Cache
Date Sat, 12 Nov 2011 00:12:51 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13148880#comment-13148880
] 

Shawn Heisey commented on SOLR-2889:
------------------------------------

@lance: To say I'm working on it is very much an overstatement.  I have taken a quick look,
enough to know that I may be in over my head, requiring a lot of learning before diving in.
 I will give it a try, but Yoda probably would not be impressed by the results.
                
> Implement Adaptive Replacement Cache
> ------------------------------------
>
>                 Key: SOLR-2889
>                 URL: https://issues.apache.org/jira/browse/SOLR-2889
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>    Affects Versions: 3.4
>            Reporter: Shawn Heisey
>            Priority: Minor
>
> Currently Solr's caches are LRU, which doesn't look at hitcount to decide which entries
are most important.  There is a method that takes both frequency and time of cache hits into
account:
> http://en.wikipedia.org/wiki/Adaptive_Replacement_Cache
> If it's feasible, this could be a good addition to Solr/Lucene.

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