The document discusses MySQL's implementation of NoSQL capabilities within its traditional SQL database. MySQL 5.6 introduced a Memcached plugin that allows for fast, non-SQL key-value access to data stored in InnoDB tables. This provides the speed of NoSQL with the ACID compliance and crash recovery of SQL. The plugin can be installed and configured, then data accessed from either Memcached clients or SQL. This allows MySQL to serve as both a traditional SQL database and a NoSQL store.