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Comet and Reverse Ajax: The Next Generation Ajax 2.0 | Dave McCarthy, Phile Crane
firstPress, Paperback, Estimated Publication Date October 2008, 100 pages, ISBN 1590599985 | List Price: $19.99
Our Price: $16.95
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| | | Availability: Not-Yet-Published. Estimated publication date is October 2008. If you order it today we can ship it to you when it arrives. |
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One of the most basic laws of a web application is that the client, not the
server, must initiate any communication between the two. There are a number
of common–use cases where, ideally, the server would like to talk to the
client—dashboards and monitoring apps, chat rooms and other collaborations,
and progress reports on long–running processes. Comet (a.k.a. Reverse Ajax)
provides a mechanism for enabling this. Comet is moderately complex to implement.
But this practical, hands–on book gets you going.
• In Part 1 of this book, we start by examining the use cases, and look at
the simple alternatives to Comet and how far they can satisfy your needs. In
some situations, though, only Comet will do.
• In Part 2, we demonstrate how to set up and run a Comet–based application.
With this book, be a part of the next generation, Ajax 2.0.
What you’ll learn
• Find out what Comet is and the trouble with HTTP.
• See how to achieve push, polling, piggy–backing, raw sockets, and more.
• Explore some common use cases and a worked example on “magnetic poetry.”
• Understand what some issues and techniques are including the two–request
limit, pub–sub and server architectures, and continuations vs. native Comet.
• Use implementations of Comet, including Cometd/Bayeaux, Reverse Ajax in DWR,
and more.
• Work through the final example using DWR Framework.
Who is this book for?
This firstPress title is for Ajax developers who are intrigued by Comet/Reverse
Ajax, key to the next generation Ajax 2.0.
About the Authors
Dave Crane has 10 years+ in IT, using Java, PHP, Python, UNIX, etc. in the
fields of digital TV, banking, and sustainable development. He is also a best–selling
author of several Ajax books in the industry.
Phil McCarthy has 8 years in IT, using Java, various dynamic languages, web
development, etc. in the fields of videogame development, telecoms, and banking.
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