- https://medium.com/@dakota.lillie/using-action-cable-with-react-c37df065f296
- https://medium.com/@benpong89/action-cable-and-react-9a00be5e391b
- https://medium.com/codequest/actioncable-in-rails-api-f087b65c860d
- https://medium.com/@the.asantiagojr/how-to-setup-actioncable-with-a-rails-api-backend-1f1807c2d908
- https://medium.com/@dlchung/rails-api-actioncable-and-websockets-without-nodejs-167181376927
location /cable {
proxy_pass http://app;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
}