title: Angular4 always require Browsers Cache Clean
body: <p>I have a web application in production environment. The users are using it every day, when I publish an update and a user comes back to the web application he/she views the old version of the web application. He needs to refresh the browser to load the new version. How can I solve this problem? I cannot tell hundreds of users to refresh the page every time I publish an update (3-4 times a week).
  I have used following to build my front end application : Angular4 with angular-cli</p>