Jump to content

Simple Update Protocol

From Wikipedia, the free encyclopedia

This is the current revision of this page, as edited by JJMC89 bot III (talk | contribs) at 20:57, 6 June 2024 (Moving Category:Atom (Web standard) to Category:Atom (web standard) per Wikipedia:Categories for discussion/Speedy). The present address (URL) is a permanent link to this version.

(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)

Simple Update Protocol, or SUP, is a protocol developed by FriendFeed to simplify and speed up RSS and Atom feed updates. Updates from services that supported the protocol would appear on FriendFeed within seconds,[1] until support was dropped. These sites include Disqus, Identi.ca, reddit[failed verification].[2]

Functioning

[edit]

SUP introduces SUP feeds, which are lists of RSS and Atom feeds that have updated recently. A feed consumer (like FriendFeed, or a feedreader) can regularly poll a small number of SUP feeds instead of polling each individual feed.[1]

RSS and Atom feeds are identified in SUP feeds by an opaque, unique identifier derived from their URL. This allows a SUP feed to index private feeds without revealing their URL.[1]

SUP feeds are intended to be managed by services that publish large amounts of RSS and Atom feeds,[3] though FriendFeed also hosted a public SUP feed which anyone could post updates to.[4] The mechanism for posting updates to a public SUP feed is not standardised.

Past Support

[edit]
  • Brightkite supported SUP[1] but was itself shutdown in April 2012.
  • YouTube's API v2.0 supported SUP,[5] but that version of the API was deprecated in 2014 and YouTube's SUP feed was eventually shut down. YouTube data API v3 supports PubSubHubbub instead.[6]

References

[edit]
  1. ^ a b c d 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. ^ Frequently asked questions about SUP
  4. ^ Public SUP feed, FriendFeed API, archived February 20, 2008 from the original.
  5. ^ Developer's Guide: Data API Protocol – Simple Update Protocol (SUP), Google Code: Youtube APIs and tools, archived November 13, 2011 from the original.
  6. ^ Subscribe to Push Notifications, Youtube - Data API
[edit]

See also

[edit]