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From "Vijay (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-5357) Query cache
Date Mon, 05 Aug 2013 09:35:48 GMT


Vijay commented on CASSANDRA-5357:

Hi Jonathan, 

I pushed a basic version of Query cache to
.I am not sure if we still need RowCacheSentinel, but the attached removes it. Attached patch
also has an option query_cache: true (if set to false, the whole row will always be cached).
It will be nice to have fully off-heap Map/Cache (including the keys) but i am thinking to
address it with a separate github project/patch (though IMHO, CHM may have contention in the
segments for a big caches).

Let me know what you think about the patch, it might need some more cleanup.
> Query cache
> -----------
>                 Key: CASSANDRA-5357
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jonathan Ellis
>            Assignee: Vijay
> I think that most people expect the row cache to act like a query cache, because that's
a reasonable model.  Caching the entire partition is, in retrospect, not really reasonable,
so it's not surprising that it catches people off guard, especially given the confusion we've
inflicted on ourselves as to what a "row" constitutes.
> I propose replacing it with a true query cache.

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