This is a protocol which aims to reduce the polling done by RSS clients.However, this is a server to server protocol and is not applicable to clients.
Along with the RSS to a post, a server's (hub) address is also published by the publisher (pub). After this point, the server (Sub - Subscriber) which wants to get updates from the publisher, will register with the hub and leave a callback URL (webhook). When there is an update, the publisher will post the update to the hub. The hub will in turn publish the update to all the subscribers by calling the callback URL and pass the update as an atom.
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While keeping tab of the happenings in the internet, I come across new concepts. I research about it and understand it. I want share and document this knowledge.
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