title: I have microservices hosted on different domain, How can i have single login for all of them. Something similar to google
body: <p>I am currently creating a microserices some of which will be hosted on different url. How can I implement the same, I mean if I login with 1 url, I can access all the websites.</p>
  <p>My thinking is that I'll create a master authentication as a middleware which will check all request from all urls and allow those that have been authenticated</p>