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Publish–subscribe is a sibling of the message queue paradigm, and is typically one part of a larger message-oriented middleware system. Most messaging systems support both the pub/sub and message queue models in their API ; e.g., Java Message Service (JMS).
WebSub (formerly PubSubHubbub) is an open protocol for distributed publish–subscribe communication on the Internet. [1] Initially designed to extend the Atom (and RSS) protocols for data feeds, the protocol can be applied to any data type (e.g. HTML, text, pictures, audio, video) as long as it is accessible via HTTP.
One example of a commonly used documentation format is the one used by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides in their book Design Patterns. It contains the following sections: Pattern Name and Classification: A descriptive and unique name that helps in identifying and referring to the pattern.
The publish-subscribe technology described there was invented by Frank Schmuck, who probably should get the credit as the first person to ever invent a fully functional publish-subscribe solution. Encyclopedia articles need this sort of historical content or they basic write people out of history.
5. Under the 'Web and iCal Access' section, click a radio button to make your calendar Private or Public. 6. Click Email This Link under HTML (to share as a web page) or ICAL (if you want to share with other iCal applications). 7. In the email window that appears, enter the email address of the person you want to share your calendar with. 8 ...
In push technology, clients can express their preferences for certain types of information or data, typically through a process known as the publish–subscribe model. In this model, a client "subscribes" to specific information channels hosted by a server.
RSS 1.0 is an open format by the RSS-DEV Working Group, again standing for RDF Site Summary. RSS 1.0 is an RDF format like RSS 0.90, but not fully compatible with it, since 1.0 is based on the final RDF 1.0 Recommendation. RSS 1.1 is also an open format and is intended to update and replace RSS 1.0.
Many sites choose to publish their feeds in only a single format. For example, CNN and The New York Times offer their web feeds only in RSS 2.0 format. News articles about web syndication feeds have increasingly used the term "RSS" to refer generically to any of the several variants of the RSS format such as RSS 2.0 and RSS 1.0 as well as the ...