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https://issues.apache.org/jira/browse/SOLR-2906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shawn Heisey updated SOLR-2906:
-------------------------------
Attachment: FastLFUCache.java
ConcurrentLFUCache.java
Here is the first crack at an LFU implementation. There's some weirdness with
negative numbers in the statistics, and I'm not sure that eviction and warming
are working right, but I am having trouble getting a test environment fully
operational.
> Implement LFU Cache
> -------------------
>
> Key: SOLR-2906
> URL: https://issues.apache.org/jira/browse/SOLR-2906
> Project: Solr
> Issue Type: Sub-task
> Components: search
> Affects Versions: 3.4
> Reporter: Shawn Heisey
> Priority: Minor
> Attachments: ConcurrentLFUCache.java, FastLFUCache.java
>
>
> Implement an LFU (Least Frequently Used) cache as the first step towards a
> full ARC cache
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