[jira] [Updated] (SOLR-2906) Implement LFU Cache

["Shawn Heisey (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-2906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shawn Heisey updated SOLR-2906:
-------------------------------

    Attachment: SOLR-2906.patch

I have added some text to CHANGES.TXT under 3.6.  Like before, my patch is against branch_3x.

Yonik, you may be right about lastAccessed.  I was striving for correctness on this first pass, but perhaps it's not worthwhile to care about that too much, just let Java's default functionality figure out which ones to evict.
                
> 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
>            Assignee: Erick Erickson
>            Priority: Minor
>         Attachments: ConcurrentLFUCache.java, LFUCache.java, SOLR-2906.patch, SOLR-2906.patch, SOLR-2906.patch, TestLFUCache.java
>
>
> Implement an LFU (Least Frequently Used) cache as the first step towards a full ARC cache

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