Discussion thread for the extension Riiak, which is described and available for download here: http://www.yiiframework.com/extension/riiak/
Riiak is a client library for the Riak key/value data store.
Project page is on Bitbucket: https://bitbucket.org/intel352/riiak
Read more about Riak here: http://www.basho.com/products_riak_overview.php