[React/Node.js] Socket. io / SSE reference

socket.io 실시간 chat 구현 (react - Node.js)
(1) https://roothyo.tistory.com/41?category=1033490
(2) https://roothyo.tistory.com/42?category=1033490
(3) https://roothyo.tistory.com/77?category=1033490

socket.io 간단한 개념
https://poiemaweb.com/nodejs-socketio

React socket.io 실시간 chat 구현 영상 (room number 지정)
https://www.youtube.com/watch?v=djMy4QsPWiI

nodeJS와 React, Socket.io로 통신
https://velog.io/@jun17114/nodeJS와-React-Socket.io로-통신
https://gaemi606.tistory.com/entry/React-socketio%EB%A5%BC-%ED%99%9C%EC%9A%A9%ED%95%9C-%EC%B1%84%ED%8C%85-Nodejs-redux

SSE
https://velog.io/@stella6767/SSE-Protocol-활용해서-Spring-React-단방향-통신하자
https://jellybeanz.medium.com/server-sent-events-server-push-%EB%9E%80-da6775de5c5d