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JSON Feed - The New RSS?

SON Feed is a new take on the web syndication format, but unlike RSS and Atom it's in JSON, not XML. So what does it try to do better?

Mainly overcome the perils of XML; it's complex, heavyweight, difficult to parse and not in sync with the current trend wanting web data exchange happening almost exclusively in JSON document representation.

In contrast, JSON is easier to both write and parse, manipulate and consume, especially given that its data types are exact reflections of their native Javascript counterparts.
Devised by Brent Simmons, the original developer of the popular NetNewsWire and Manton Reece creator of Micro Blogs, both with a great background on publishing with RSS, it's a certainty that JSON Feed will emerge as a strong competitor to both Atom and RSS, being based upon their decade long experience on decentralized formats.

On top of that it also tries to tackle a few other issues plaguing RSS, mainly the lack of realtime client notification when content updates, as well as the feed demanding the presence of title headers for its items, something that renders RSS not compatible with social media services like Twitter or micro blogs.

full article on i-programmer.info

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