We've been banging our heads on how to optimize a lock-state downloading a large set of data with Ember-data/Rest-adapter. We're preloading an app with data from a REST API and one of the sets has ha weight of ~2M for some users. What we want to do is avoid the lock-state that the app runs into when extracting all these records.
In this example the interface is supposed to update i on each frame, but "hangs" as soon as the JSON is downloaded and being prepared. This is of-course related to the single-threaded execution, but there has to be some way of making this graceful?
App = Ember.Application.create();
App.Router.map(function() {
// put your routes here
});
App.IndexRoute = Ember.Route.extend({
model: function() {
return [];
},
setupController: function(controller) {
var element = document.getElementById('counter');
var i = 0;
var l = function() {
element.innerHTML = i;
i++;
window.requestAnimationFrame(l);
}.bind(this);
l();
this.store.find('record').then(function(data){
console.log('loaded', data);
});
}
});
App.RecordModel = DS.Model.extend({
name: DS.attr('string'),
email: DS.attr('string'),
birthdate: DS.attr('date'),
created: DS.attr('date'),
});
App.RecordAdapter = DS.RESTAdapter.extend({
host: 'http://ift.tt/1HEcLHW',
pathForType: function() {
return 'json_example.json';
}
});
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Ember Starter Kit</title>
<link rel="stylesheet" href="http://ift.tt/1x2iORp">
<script src="http://ift.tt/1mWWrGH"></script>
<script src="http://ift.tt/1FzPymq"></script>
<script src="http://ift.tt/1FzPyms"></script>
<script src="http://ift.tt/1HEcK6F"></script>
<script src="app.js"></script>
</head>
<body>
<div id="counter"></div>
<script type="text/x-handlebars">
<h2>Welcome to Ember.js</h2>
{{outlet}}
</script>
<script type="text/x-handlebars" data-template-name="index">
</script>
</body>
</html>
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