SUP, A Format To Tell Which Feeds Updated

Source: Google Blogoscoped
URL: http://blogoscoped.com/archive/2008-08-28-n72.html

SUP stands for Simple Update Protocol (officially, anyway, though it's perhaps an acronym or backronym for 'what's up' aka ''sup'). It's a JSON-based meta format for RSS/ Atom feeds useful for websites that deliver a large number of feeds, like a blogging platform, so that services subscribing to that site's RSS feeds only need to download a single file to check for updates, and then download the other individual feeds as needed. SUP was invented by the ex-Google employees Paul Buchheit and Gary Burd of (...