看设计模式 就好了

Software Design and Architecture - Coursera

目前 MIT 的课都可以在这上面看到。

Fall 2020 Course 6: Electrical Engineering and Computer Science (Archive) (mit.edu)

6.031 Elements of Software Construction URL: https://eecs.scripts.mit.edu/eduportal/How_Courses_Will_Be_Taught_Online_or_Oncampus/S/2021/#6.031

6.033 Computer Systems Engineering URL: https://eecs.scripts.mit.edu/eduportal/How_Courses_Will_Be_Taught_Online_or_Oncampus/S/2021/#6.033