title: Server data change in Single Page Application
body: <p>I am creating a SPA using react-redux and dot net core web api.</p>
  
  <p>I am calling get data in the componentDidMount. I have search functionality as well to implement. So i can do a real time search or search in the redux state that we fetched previously. </p>
  
  <p>Is there any way for the application to be notified about any data changes on the server so that the state data can be up to date?</p>
  
  <p>What is the best approach for such scenario. I need to implement ticketing system as where tickets needs to be updated so that if a ticket is picked up by one user, it should not be visible to other user.</p>