<?xml version="1.0" encoding="utf-8"?>
<feed xml:lang="en-us" xmlns="http://www.w3.org/2005/Atom"><title>Simon Willison's Weblog: idempotent</title><link href="http://simonwillison.net/" rel="alternate"/><link href="http://simonwillison.net/tags/idempotent.atom" rel="self"/><id>http://simonwillison.net/</id><updated>2007-11-21T20:18:13+00:00</updated><author><name>Simon Willison</name></author><entry><title>A Taxonomy of Event- and REST-based Comet</title><link href="https://simonwillison.net/2007/Nov/21/comet/#atom-tag" rel="alternate"/><published>2007-11-21T20:18:13+00:00</published><updated>2007-11-21T20:18:13+00:00</updated><id>https://simonwillison.net/2007/Nov/21/comet/#atom-tag</id><summary type="html">
    
&lt;p&gt;&lt;strong&gt;&lt;a href="http://cometdaily.com/2007/11/21/a-taxonomy-of-event-and-rest-based-comet/"&gt;A Taxonomy of Event- and REST-based Comet&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;
Kris Zyp describes a conceptual model for Comet messages based on REST semantics (so you can send a PUT referencing a specific URI down to a client to represent an idempotent state change).


    &lt;p&gt;Tags: &lt;a href="https://simonwillison.net/tags/comet"&gt;comet&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/http"&gt;http&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/idempotent"&gt;idempotent&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/javascript"&gt;javascript&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/kriszyp"&gt;kriszyp&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/put"&gt;put&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/rest"&gt;rest&lt;/a&gt;&lt;/p&gt;



</summary><category term="comet"/><category term="http"/><category term="idempotent"/><category term="javascript"/><category term="kriszyp"/><category term="put"/><category term="rest"/></entry></feed>