Be/main/jongmlee spring lv2 #25
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테스트 통과 확인했습니다!
이번 과제를 하면서 고민했던 것들입니다.
컨트롤러에는 왜 인터페이스가 없어도 되는가?
서비스 안에서의 책임 분리
예외 메세지를 관리할때 enum을 써야 하는가?