Weitere ähnliche Inhalte Ähnlich wie Comet, Simplified, with Jabbify Comet Service Ähnlich wie Comet, Simplified, with Jabbify Comet Service (20) Mehr von Brian Moschel (10) Kürzlich hochgeladen (20) 2. Overview
Why Why How It Showcase
Demo
Comet? Jabbify? Works
5. Why Comet?
• Demand for Comet is growing
• Desktop apps moving to the web
• Chat
• Real time updates
• Don’t like to reload
• Ajax:2003::Comet:2009
6. What is Jabbify?
• Comet, simplified
• No server
• No setup
• JavaScript API and GET requests
8. Simple to use
synchronized (_continuations) {
for(Iterator<Map.Entry <String, ArrayList<Continuation>>> iter =
_continuations.entrySet().iterator(); iter.hasNext();){
Map.Entry<String, ArrayList<Continuation>> entry = iter.next();
ArrayList<Continuation> continuations = entry.getValue();
for(Continuation c : continuations){
c.resume();
}
}
_continuations.clear();
}
vs
Jabbify.connect({name: this.username}, this.continue_to('after_connect'))
after_connect: function(){
Jabbify.send('vote','submit', {result: this.result})
}
9. Scale easily
• Scaling comet >> Scaling traditional web
applications
• Resource intensive
• Jabbify is built to scale as usage grows
10. Rapid Setup
<New id=quot;cfquot; class=quot;org.mortbay.jetty.plus.naming.Resourcequot;>
<Arg>jms/connectionFactory</Arg>
<Arg>
<New class=quot;org.apache.activemq.ActiveMQConnectionFactoryquot;>
<Arg>failover:(tcp://localhost:61616)?initialReconnectDelay=20&maxReconnectDe
lay=900</Arg>
</New>
</Arg>
</New>
vs
<script language=quot;javascriptquot; type=quot;text/javascriptquot; src=quot;jabbify.jsquot;></script>
11. Comet is complex
• Client
– Transports (JSONP, Window.name, Flash, XHR, iframe)
• Server
– Special server
– Setup time
– Learning curve
• Scaling
– Resource consumption
– Threading issues
12. Jabbify is simple
• Client to Client Comet
– JavaScript API
• Jabbify.send(“message”,”create”,{message: “hi there”});
• Server to Client Comet
– GET requests
• https://jabbify.com/message_push?key=123&type=message...
