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https://issues.apache.org/jira/browse/CASSANDRA-5348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13613172#comment-13613172
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Jason Brown commented on CASSANDRA-5348:
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I agree with Sylvain on this. We've spent a lot of time and effort pitching row
cacheing, and it might be a bit of a kick in the shins to pull it out on those
use who've decided to give it a shot (and are using it successfully). There are
a few (few, mind you) reasonable uses of row cache here at NFLX, and those
users are happy with it.
I'll agree about the education piece, but I think it would be good to have our
rewrite story reasonably organized before asking the community to avoid row
caches. That way, we can have a smoother transition for users.
Unless the effort of working around the current implementation is a complete
road block to getting the new hotness up and running, I think we should keep
the existing solution around. Making the rewrite a priority for 2.1 gets a +1
from me.
> Remove row cache until we can replace it with something better
> --------------------------------------------------------------
>
> Key: CASSANDRA-5348
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5348
> Project: Cassandra
> Issue Type: Task
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Vijay
> Fix For: 2.0
>
>
> The row (partition) cache easily does more harm than good. People expect it
> to act like a query cache but it is very different than that, especially for
> the wide partitions that are so common in Cassandra data models.
> Making it off-heap by default only helped a little; we still have to
> deserialize the partition to the heap to query it.
> Ultimately we can add a better cache based on the ideas in CASSANDRA-1956 or
> CASSANDRA-2864, but even if we don't get to that until 2.1, removing the old
> row cache for 2.0 is a good idea.
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