https://github.com/expressjs/cors https://expressjs.com/en/resources/middleware/cors.html
https://open.iot.10086.cn/doc/nb-iot/book/manual/httppush/config.html
https://blog.logrocket.com/build-rest-api-node-express-mysql/
https://www.section.io/engineering-education/how-to-build-authentication-api-with-jwt-token-in-nodejs/ https://www.weblearningblog.com/nodejs/simple-login-and-registration-with-expressjs-sequelize-bcrypt-and-jwt/
https://www.turing.com/kb/mysql-connection-with-node-js-using-sequelize-and-express https://sequelize.org/docs/v6/getting-started/
https://ap-southeast-2.console.aws.amazon.com/elasticmapreduce/home?region=ap-southeast-2#cluster-details:j-3PA83GZ7EZMGV https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-connect-ssh-prereqs.html https://medium.com/botfuel/how-to-expose-a-local-development-server-to-the-internet-c31532d741cc