real-time-updates

Looking in to using PubNub to send real-time updates to the user's web browser. I looked over their website and materials. It looks like they have a few different options. We would like to use it for sending real time updates to a web page that a user is looking at. The information is simple stuff like "You just received a message". We are not trying ti implement a chat program or anything like that. Is PubNub a good solution for this? If so, which version of the service should be be using? We are running Django on a Heroku server. Thanks so much! Stephen Blum PubNub Facebook Notification This

Looking through the Firebase FAQ I can't see how cross domain issues are handled. Obviously, we don't want to serve on the Firebase domain, is it CORS , hidden iFrame, other? Would we need to create a sub-domain that points at the IP of the sharing server? Let me answer this question in two parts, as there are multiple ways to communicate with the Firebase Servers. Firebase JavaScript Client - The Firebase Javascript Client maintains a real-time bidirectional connection to the server. Under the covers, this uses WebSockets whenever possible (which have no limitations with regard to cross

In order to notify all users through WebSockets, when something is modified in selected JPA entities, I use the following basic approach. @ServerEndpoint("/Push") public class Push { private static final Set<Session> sessions = new LinkedHashSet<Session>(); @OnOpen public void onOpen(Session session) { sessions.add(session); } @OnClose public void onClose(Session session) { sessions.remove(session); } private static JsonObject createJsonMessage(String message) { return JsonProvider.provider().createObjectBuilder().add("jsonMessage", message).build(); } public static void sendAll(String text) {