title: How to refresh a react redux application when data changes on DB outside of the application
body: <p>Scenario - data changes on some of the tables in the database, say using a file upload from another process, like an ETL tool that is not part of the react-redux application. How can we then refresh the react-redux application components? Is web sockets the only to push such a change from server to client? Or do we refresh the affected components at regular intervals? but then all such ports will have to be left open all the time? Backend is a java/oracle application.
  Thanks</p>