We have developed a C++ client library based on the hector Java client for Cassandra that we intend on using for Drizzle integration. This library is still very much alpha and more features will be added while we work on drizzle integration. Connection pooling or failover is currently not implemented but will likely be added in the very near future.
The source is available on github at: http://github.com/posulliv/libcassandra -Padraig
