From blogs.innodb.com: InnoDB Memcached with Binlog Capability
In our earlier Labs release, we presented a MySQL NoSQL solution through InnoDB Memcached Daemon Plugin (see earlier Calvin’s and my posts). That earlier release allows the Memcached Plugin directly interacting with InnoDB, completely bypassing MySQL optimizer and
QP layers. It differs with another popular MySQL NoSQL solution, HandlerSocket, by skipping even the Handler API layer and directly access the InnoDB through InnoDB APIs. Thus, in theory, it would be simpler and more efficient.
What is QP Layers?
Searching did not yield me any good results. The closest I came to was
Query Path. Is this right?