[MySQL learning notes 20] MySQL architecture

name	duty
adjoining course	Responsible for communicating with clients , Including connection handling 、 Authorized certification 、 Safety treatment
Service layer	Responsible for most core service functions , Such as sql Interface , And complete the cache query ,sql Statement analysis and optimization , Execution of some built-in functions . All the cross storage engine functions are also implemented in this layer , Such as process 、 Functions, etc
Engine layer	be responsible for mysql The storage and extraction of data in , The service layer through API Communicate with the engine layer
Storage layer	Store data in a file system