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https://issues.apache.org/jira/browse/SOLR-3830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13454067#comment-13454067
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Yonik Seeley commented on SOLR-3830:
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bq. so I'd like to rename it to FastLFUCache.
+1, it hasn't been used in the default solrconfig.xml, so this change shouldn't
really affect anyone.
I don't think we should rename the other ones that people are likely to have in
their configs already though. There is a note right next to where one would
configure these cases that tries to explain the difference. We should update
that if it's not sufficient.
> Rename LFUCache to FastLFUCache
> -------------------------------
>
> Key: SOLR-3830
> URL: https://issues.apache.org/jira/browse/SOLR-3830
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.0-BETA
> Reporter: Adrien Grand
> Priority: Minor
>
> I find it a little disturbing that LFUCache shares most of its behavior (not
> strictly bounded size, good at concurrent reads, slow at writes unless
> eviction is performed in a separate thread) with FastLRUCache while it sounds
> like it is the LFU equivalent of LRUCache (strictly bounded size,
> synchronized reads, fast writes) so I'd like to rename it to FastLFUCache.
> Maybe we should also rename these Fast*Cache to Concurrent*Cache so that
> people don't think that they are better than their non Fast alternatives in
> every way.
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