出典:Wikipedia
出典:『Wikipedia』 (2011/03/13 00:06 UTC 版)
PubSubHubbub is an open protocol for distributed publish/subscribe communication on the Internet. The protocol extends the Atom (and RSS) protocols for data feeds. The main purpose is to provide near-instant notifications of change updates, which would improve on the typical situation where a client periodically polls the feed server at some arbitrary interval.