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https://issues.apache.org/jira/browse/CASSANDRA-259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12725445#action_12725445
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Jonathan Ellis commented on CASSANDRA-259:
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Thanks for the pointer. I didn't actually see much about CLHM there, just the
comments "Their 'old algorithm' is much like this one. The new algorithm looks
very cool but is not production ready yet... Okay the algorithms i'm using in
our version are not actually the same as their old algorithm. In any case,
should stay tuned to their new algorithm."
Do you think we should borrow HBase's implementation instead? I'm reasonably
confident that CLHM is production ready given that ehcache
(http://ehcache.sourceforge.net/) uses them heavily enough to have run into at
least that one concurrency bug that's fixed now. :)
> LRU cache for key positions
> ---------------------------
>
> Key: CASSANDRA-259
> URL: https://issues.apache.org/jira/browse/CASSANDRA-259
> Project: Cassandra
> Issue Type: New Feature
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
>
> add cache like the old touch cache, but working :)
> this will mitigate the performance hit from CASSANDRA-223
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