I'm still listening to Professor Kim Young-han's lectures, and they're really fun and I don't get sleepy!! As I listen, I want to quickly learn everything, use it effectively, and share my knowledge with others around me. Professor, by the way, do you have any intention of making a lecture on Spring Security?ㅠ.ㅠThe God of Spring, the King of Spring, the Master of Spring, I just wish you would make all the lectures...The bestㅡ