"MySQL 5.6 includes a NoSQL interface, using an integrated memcached daemon that can automatically store data and retrieve it from an InnoDB table. By default, you use the memcached API purely to speed up database operations, letting InnoDB handle memory caching using its buffer pool mechanism. Advanced users can enable the traditional memcached in-memory caching and control whether operations look up and store data in memory, in InnoDB tables, or both. This offering provides users with the best of both worlds"
To really get this right they'd need to add some auto-rebalance / sharding magic and have it integrated much more deeply. This is really only a head-nod toward NoSQL.
