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https://issues.apache.org/jira/browse/SOLR-2889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13148082#comment-13148082
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Simon Willnauer commented on SOLR-2889:
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@yonik: I agree progress over perfection... this can happen afterwards
@shawn: please go ahead and hack on what you wanted to do, your contribution is
more than welcome! You should start where and with what you feel comfortable
and we gonna work towards improving our codebase. My idea I mentioned above
with adding a module is a long term goal, lets concentrate on what this issue
tries to achieve.
@jason: I agree with yonik, we have been there and we should not express our
strong feelings loud in every issue possible. We'll get there its open source!
> 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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