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https://issues.apache.org/jira/browse/CASSANDRA-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13239849#comment-13239849
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Yuki Morishita commented on CASSANDRA-4087:
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+1 with nit: I prefer "auto".equalsIgnoreCase(conf.key_cache_size_in_mb) to 
avoid NPE in case someone misconfigures value.
                
> Improve out-of-the-box cache settings
> -------------------------------------
>
>                 Key: CASSANDRA-4087
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4087
>             Project: Cassandra
>          Issue Type: Improvement
>    Affects Versions: 1.1.0
>            Reporter: Jonathan Ellis
>            Assignee: Pavel Yaskevich
>             Fix For: 1.1.0
>
>         Attachments: CASSANDRA-4087.patch
>
>
> The default key cache of 2MB is significantly smaller than <= 1.0 (200 rows 
> per CF) and much smaller than most production uses.  How about min(5% of the 
> heap, 100MB)?

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