ember-data update data from rest api

I have an ember application that consume a Django Rest Api. Data on backend changes frequently(new records are created/updated every minute). How can I update my data on ember app? I think this is a common pattern in SPA application but I didn't find nothing in official doc that says what is the best approach to this pattern.

After some searches i found two patterns:

• Websockets: this is the only real-time solution but this is to complex to implement because of using django on backend and lack of knowledge


• Old-style interval polling: this is not real-time but good for my needs.

I tried to implement a long polling object according http://ift.tt/1iXPFjM:

I'm using ember-cli and ember-data.

app/util/pollster.js

import Ember from "ember";

var Pollster = Ember.Object.extend({
    interval: function() {
        return 5000; // Time between polls (in ms)
    }.property().readOnly(),

    // Schedules the function `f` to be executed every `interval` time.
    schedule: function(f) {
        return Ember.run.later(this, function() {
            f.apply(this);
            this.set('timer', this.schedule(f));
        }, this.get('interval'));
    },

    // Stops the pollster
    stop: function() {
        Ember.run.cancel(this.get('timer'));
    },

    // Starts the pollster, i.e. executes the `onPoll` function every interval.
    start: function() {
        this.set('timer', this.schedule(this.get('onPoll')));
    },

  onPoll: function(){
    // Issue JSON request and add data to the store
    }
});

export default Pollster;

app/routes/test.js

setupController: function(controller, model) { 
    if (Ember.isNone(this.get('pollster'))) {
        this.set('pollster', Pollster.create({
            controller: controller
            onPoll: function() {
                this.controller.set('model', this.controller.store.find('mymodel',}));
            }
        }));
    }
    this.get('pollster').start();
},
deactivate: function() {
    this.get('pollster').stop();
},
.....

Q1: It seems to work but is this the best approach? Q2: Also, when the 'onPoll' function is execute i see a 'flickering' on my template. I think it's due to the fact that records of the model are deleted and recreated but it's very annoying. It's possible to avoid this behavior? Q3: where to store custom objects in emberjs? Like Pollster?