<?xml version="1.0" encoding="utf-8"?>
<feed xml:lang="en-us" xmlns="http://www.w3.org/2005/Atom"><title>Simon Willison's Weblog: sup</title><link href="http://simonwillison.net/" rel="alternate"/><link href="http://simonwillison.net/tags/sup.atom" rel="self"/><id>http://simonwillison.net/</id><updated>2008-12-18T23:33:46+00:00</updated><author><name>Simon Willison</name></author><entry><title>Simple Update Protocol: Update</title><link href="https://simonwillison.net/2008/Dec/18/friendfeed/#atom-tag" rel="alternate"/><published>2008-12-18T23:33:46+00:00</published><updated>2008-12-18T23:33:46+00:00</updated><id>https://simonwillison.net/2008/Dec/18/friendfeed/#atom-tag</id><summary type="html">
    
&lt;p&gt;&lt;strong&gt;&lt;a href="http://blog.friendfeed.com/2008/12/simple-update-protocol-update.html"&gt;Simple Update Protocol: Update&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;
Already implemented by more than five services, each of which now have near-real-time updates in to the FriendFeed syndication engine.


    &lt;p&gt;Tags: &lt;a href="https://simonwillison.net/tags/friendfeed"&gt;friendfeed&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/realtime"&gt;realtime&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/sup"&gt;sup&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/syndication"&gt;syndication&lt;/a&gt;&lt;/p&gt;



</summary><category term="friendfeed"/><category term="realtime"/><category term="sup"/><category term="syndication"/></entry><entry><title>FriendFeed Blog: Simple Update Protocol</title><link href="https://simonwillison.net/2008/Aug/28/friendfeed/#atom-tag" rel="alternate"/><published>2008-08-28T12:16:38+00:00</published><updated>2008-08-28T12:16:38+00:00</updated><id>https://simonwillison.net/2008/Aug/28/friendfeed/#atom-tag</id><summary type="html">
    
&lt;p&gt;&lt;strong&gt;&lt;a href="http://blog.friendfeed.com/2008/08/simple-update-protocol-fetch-updates.html"&gt;FriendFeed Blog: Simple Update Protocol&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;
FriendFeed infamously poll RSS feeds on the 43 services they support millions of times an hour in an effort to keep their content as real-time as possible. SUP is a new proposal by FriendFeed for a sort of “master feed” of changes to a site—instead of hitting the Flickr feed for each of their users they would just poll Flickr’s SUP feed every minute or so to find out who had uploaded a new photo, and only retrieve the RSS feed for those users.


    &lt;p&gt;Tags: &lt;a href="https://simonwillison.net/tags/atom"&gt;atom&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/feeds"&gt;feeds&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/flickr"&gt;flickr&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/friendfeed"&gt;friendfeed&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/polling"&gt;polling&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/rss"&gt;rss&lt;/a&gt;, &lt;a href="https://simonwillison.net/tags/sup"&gt;sup&lt;/a&gt;&lt;/p&gt;



</summary><category term="atom"/><category term="feeds"/><category term="flickr"/><category term="friendfeed"/><category term="polling"/><category term="rss"/><category term="sup"/></entry></feed>