title: Maintain a unique session ID in Angular and Node JS
body: <p>I am building a new WEB application where I want to achieve the below from the Application.</p>
  
  <ol>
  <li>Build a Angular UI.</li>
  <li>Create a NODE JS middleware that calls my Back end system.</li>
  </ol>
  
  <p>My first request to the back end system gives a Unique Context Key as one parameter in response. I need to use that Unique Key in every following request later on.</p>
  
  <p>How do I do this? Can we maintain a new session ID with the key in the UI side or node side?</p>
  
  <p>I am new to the development.</p>