Hi Jonathan,

Firstly, thanks for all your help on this list. Without lots of your solutions / tips etc I probably wouldn't be using Cassandra.

I've built a real-time search engine based around all the links that appear on twitter (http://www.mozzler.com/). Cassandra is my data store for all the comments associated with a link, mapping short URL's to endpoint URL's etc. Cassandra is also used for session and user data for the web front end, in conjunction with memcached to speed up the writes.

If anyone wants a simple django session manager that uses lazyboy to talk to cassandra, let me know.

Cheers,
Chris

On Fri, Nov 20, 2009 at 1:17 PM, Jonathan Ellis <jbellis@gmail.com> 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.)