Wednesday, July 15, 2009

Real time data from Google

A simple, open, server-to-server web-hook-based pubsub (publish/subscribe) protocol as an extension to Atom.

Parties (servers) speaking the PubSubHubbub protocol can get near-instant notifications (via webhook callbacks) when a topic (Atom URL) they're interested in is updated. Here is the reference implementation.

Smart idea - request Atom feed only once and after that instead of repeated polling register your own callback that will get notifications as soon as new data is published. And data feed supports such feature could be provided via Feedburner.

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