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From "Pavel Yaskevich (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3143) Global caches (key/row)
Date Tue, 06 Sep 2011 19:11:16 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098277#comment-13098277
] 

Pavel Yaskevich commented on CASSANDRA-3143:
--------------------------------------------

So yes, CacheSegment is a segment of the cache which is allocated per ColumnFamilyStore. It
is going to be used to put/get to global cache and to hold CFS specific properties of the
cache such as current cache capacity and size (modification of those properties will be reflected
on the global cache level so we don't need to worry about eviction policies). Also segment
will be responsible to save/read cache to/from disk.

> Global caches (key/row)
> -----------------------
>
>                 Key: CASSANDRA-3143
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3143
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Pavel Yaskevich
>            Assignee: Pavel Yaskevich
>            Priority: Minor
>              Labels: Core
>             Fix For: 1.1
>
>
> Caches are difficult to configure well as ColumnFamilies are added, similar to how memtables
were difficult pre-CASSANDRA-2006.

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