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https://issues.apache.org/jira/browse/SOLR-3393?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hoss Man updated SOLR-3393:
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Fix Version/s: (was: 4.0)
4.1
Assignee: Hoss Man
assigning to myself to follow up with this for 4.1 -- if someone wants to
review/profile in time for 4.0 we can certainly still consider it.
> Implement an optimized LFUCache
> -------------------------------
>
> Key: SOLR-3393
> URL: https://issues.apache.org/jira/browse/SOLR-3393
> Project: Solr
> Issue Type: Improvement
> Components: search
> Affects Versions: 3.6, 4.0-ALPHA
> Reporter: Shawn Heisey
> Assignee: Hoss Man
> Priority: Minor
> Fix For: 4.1
>
> Attachments: SOLR-3393.patch, SOLR-3393.patch, SOLR-3393.patch,
> SOLR-3393.patch, SOLR-3393.patch, SOLR-3393.patch, SOLR-3393.patch
>
>
> SOLR-2906 gave us an inefficient LFU cache modeled on
> FastLRUCache/ConcurrentLRUCache. It could use some serious improvement. The
> following project includes an Apache 2.0 licensed O(1) implementation. The
> second link is the paper (PDF warning) it was based on:
> https://github.com/chirino/hawtdb
> http://dhruvbird.com/lfu.pdf
> Using this project and paper, I will attempt to make a new O(1) cache called
> FastLFUCache that is modeled on LRUCache.java. This will (for now) leave the
> existing LFUCache/ConcurrentLFUCache implementation in place.
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