DeNA is Japan's biggest social game provider and run hundreds of MySQL servers to provide their services. So it is not surprising they also employ some of Japan's best and world famous MySQL experts to work on their LAMP stack. This team produced one of the most interesting innovations MySQL has seen for a while: HandlerSocket is MySQL's answer to the NoSQL trend, and with a vengeance. With read-transactions now running over 700% faster, it makes MySQL the fastest NoSQL key-value solution out there. And you get best of both worlds: MySQL and NoSQL in the same package.
-> MySQL + HandlerSocket で KVS と同等以上の 性能が出せることを示した