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From Michael Pearson <>
Subject Re: Cassandra users survey
Date Sat, 21 Nov 2009 02:12:11 GMT
Hi, I've been waiting for something like Cassandra for a while now for
a personal project.  The data model seems ideally suited to building a
mashup engine, or any arbitrary data user app for that matter.  I'm
still at an early stage conceptually having come from an rdbms
background, and mostly trying to wrap my head around Thrift api and
building a crud/factory in php (Pandra on github) and a keyspace
administrator for fun.  I wanted to jump in early with Cassandra
(started watching from 0.3) with a view to the future as a production
level solution once some administrative nicities have been ironed out
(data migration, node decommissioning, more robust query api etc).
What would be awesome and make me love Cassandra forever would be a
way to group columns together across keys, similar to the way
supercolumns work but by key range (depth) rather than column (width).


On Sat, Nov 21, 2009 at 7:17 AM, Jonathan Ellis <> wrote:
> Hi all,
> I'd love to get a better feel for who is using Cassandra and what kind
> of applications it is seeing.  If you are using Cassandra, could you
> share what you're using it for and what stage you are at with it
> (evaluation / testing / production)? Also, what alternatives you
> evaluated/are evaluating would be useful.  Finally, feel free to throw
> in "I'd love to use Cassandra if only it did X" wishes. :)
> I can start: Rackspace is using Cassandra for stats collection
> (testing, almost production) and as a backend for the Mail & Apps
> division (early testing).  We evaluated HBase, Hypertable, dynomite,
> and Voldemort as well.
> Thanks,
> -Jonathan
> (If you're in stealth mode or don't want to say anything in public,
> feel free to reply to me privately and I will keep it off the record.)

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