Simple Update Protocol

Simple Update Protocol, or SUP, is a protocol developed by FriendFeed to simplify and speed up RSS and Atom. A few websites supported SUP for a while, meaning that updates from their services appeared in FriendFeed within seconds,[1] until support was dropped, and eventually FriendFeed itself shutdown 2015-04-09. These sites include Disqus, Identi.ca, reddit.[2]

Past Support

Brightkite

Brightkite supported SUP[3] but was itself shutdown in April 2012.

YouTube

YouTube supported SUP according to YouTube v2 API SUP documentation, yet as that reference says "The YouTube Data API (v2) has been officially deprecated as of March 4, 2014."

YouTube Data API (v3) supports push notifications via PubSubHubbub instead and no longer has SUP section.

gollark: =tex \int_0^5 x^2 dx
gollark: We have MathBot.
gollark: Yes, inasmuch as far as I know you need various more advanced calculus things to do much of that, as well as large quantities of other maths you don't appear to know.
gollark: One basic use is that you can calculate the rate of change of things, because that's basically what the derivative is. For example, velocity is rate of change of displacement, so you can go from displacement to velocity (to acceleration, which is rate of change of velocity, and so on), or integrate to go the other way.
gollark: Having vaguely looked at how they work, I don't think you can do that unless you know the frequency of sound in question.

References
  1. Paul Buchheit. Simple Update Protocol: Fetch updates from feeds faster, FriendFeed Blog, August 27, 2008.
  2. Paul Buchheit. Simple Update Protocol: Update, FriendFeed Blog, December 18, 2008.
  3. Paul Buchheit. Simple Update Protocol: Fetch updates from feeds faster, FriendFeed Blog, August 27, 2008.

See also


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