Check out http://techblog.netflix.com/2012/07/benchmarking-high-performance-io-with.html

Netflix used Cassandra with SSDs and were able to drop their memcache layer. Mind you they were not using it purely as an in memory KV store.

Ben
Instaclustr | www.instaclustr.com | @instaclustr



On 05/03/2013, at 4:33 PM, Drew Kutcharian <drew@venarc.com> wrote:

Hi Guys,

I'm thinking about using Cassandra as an in-memory key/value store instead of memcached for a new project (just to get rid of a dependency if possible). I was thinking about setting the replication factor to 1, enabling off-heap row-cache and setting gc_grace_period to zero for the CF that will be used for the key/value store.

Has anyone tried this? Any comments?

Thanks,

Drew