블로그 탐독
https://velog.io/@paulkim/Session-%EA%B3%BC-%ED%86%A0%ED%81%B0%EC%9D%84-%EC%9D%B4%EC%9A%A9%ED%95%9C-%EC%9C%A0%EC%A0%80-%EC%9D%B8%EC%A6%9D%EC%97%90-%EB%8C%80%ED%95%B4%EC%84%9C
설명이 자세히 나와있다.
https://developer.okta.com/blog/2017/08/17/why-jwts-suck-as-session-tokens
http://guswnsxodlf.github.io/json-web-token
https://minieetea.com/2017/03/archives/5001