📌 웹

👉 DOM ?

https://www.youtube.com/watch?v=1ojA5mLWts8

👉 쿠키 세션 캐시

https://www.youtube.com/watch?v=OpoVuwxGRDI

👉 redis

참고자료
참고자료
https://www.youtube.com/watch?v=mPB2CZiAkKM