websocket or socket.io を用いたチャットアプリ作成
Go+Angular
https://github.com/googollee/go-socket.io
https://orisano.hatenablog.com/entry/2018/12/05/015401
https://qiita.com/itsukiss/items/d940d3b8e3938c923bf5
https://blog.jxck.io/entries/2016-08-22/websocket-connectivity.html
https://qiita.com/K-juju/items/cc89ed55f7c68ae732e0
https://github.com/gorilla/websocket
https://qiita.com/k-penguin-sato/items/5b09fa89d8d231bcdac8
https://qiita.com/kitakitsune/items/c007529f57ff12e04965
https://qiita.com/rihofujino/items/7bf4b99e2176f63ca7ef
http://uorat.hatenablog.com/entry/2015/08/30/190613
https://codezine.jp/article/detail/10044?p=2
https://engineering.linecorp.com/ja/blog/the-architecture-behind-chatting-on-line-live/