The rapid advent of “Web 2.0” applications has unleashed new HTTP traffic patterns which differ from the conventional HTTP request-response model. In particular, asynchronous pre-fetching of data in order to provide a smooth web browsing experience and richer HTTP payloads (e.g., Javascript libraries) of Web 2.0 applications induce larger, heavier, and more bursty traffic on the underlying networks. We present a traffic study of Web 2.0 applications including Google Maps, modern Web-email, and social networking Web sites, and compare them with all HTTP traffic. We highlight the key differences of Web 2.0 traffic from traditional HTTP traffic through statistical analysis. As such our work elucidates the changing face of one of the most popular application on the Internet: The World Wide Web.
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This is the tale of 101 Damnations. Sadly, it’s no Disney story - in fact it’s more likely to have been pulled from the pages of the Brothers Grimm. Whilst writing the EJB modules for our JGenerator product, we started punting an email back and forth containing all the issues we had with EJB. And there were many. Before we knew it we ended up with 101 howlers. In this article we present an edited version of the email. It isn’t a complete list and there may be some overlapping issues. If there is enough interest we will turn it into a more formal analysis.
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In most scientific disciplines, the majority of academic papers are written collaboratively. They also tend to undergo several rounds of revision, with new content often being added after peer review and style and format reworked for target journals. Currently, this tends to involve emailing versions of the document between authors, or storing versions on shared drives. However, a new breed of online applications that mimic the functions of desktop applications could change the process of producing a scientific paper.
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Current search engines such as Google and Yahoo! are prevalent for searching the Web. Search in dynamic pages, however, is either inexistent or far from perfect. AJAX and Rich Internet Application are such applications. They are increasingly frequent on the Web (in YouTube, Amazon, GMail, Yahoo!Mail) or mobile devices and are offering a high degree of interactivity to the user, by seamlessly loading content from the server without the need to refresh the page. Current search engines cannot correctly index AJAX applications. This produces false positives and false negatives, because search engines do not understand the application logic that loads content dynamically. Crawling an AJAX application is a difficult problem. Since the user invokes events on the page, crawling must identify the different application states generated by the client-side logic.
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The convergence of windows and the web is upon us . Google Maps, Gmail, Flickr and a variety of ne
AJAX and Rich Internet applications have begun to legitimize moving beyond HTML to deliver interactive applications that deliver the best of the web and the best of the desktop experience. We will show how these techniques are changing the way designers think about their applications designs. You will learn how to develop complex GUI’s for mixed user profiles, effectively use multimedia, implement visual design patterns, and effectively develop for multiple platforms plus, you will see the usability challenges introduced when these new interaction techniques are implemented. Learn from the experts who have been helping companies develop world-class enterprise applications for over a decade.
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This document guides you through the installation of the Postfix mail transportation agent (MTA), the Cyrus IMAP server. The goal is a fully functional high-performance mailsystem with user-administration with Web-cyradm, a webinterface. Data like virtualusers, aliases etc. are stored in a mysql database.
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Nearly all Web 2.0 applications started life as consumer-focused services, only later finding their way into the enterprise. But unlike many consumer ‘toys’, Web 2.0 actually delivers impressive benefits to the enterprise, including:
Streamlining collaboration within and beyond the enterprise
Accelerating search and information retrieval
Capturing knowledge assets and facilitating knowledge transfer
Speeding application development and deployment
Communicating with stakeholders in new ways
Some of these benefits are ‘soft’. Others are quantifiable. But all have combined to earn the attention of line-of-business managers and IT strategists alike. Web 2.0 is here to stay.
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What on earth is Web 2.0? Web 2.0 carries a high profile and surrounding hype. Developers must surely be feeling the heat to quickly adopt the new second generation of dynamic, interactive and simple by design technologies.

Web 2.0 is the term pioneered by O’Reilly for new generation Web applications.Live.com, start.com, Google maps, Google Docs, YouTube, Flickr, and MySpace are few examples. Adaptation of this technology vector has changed the web application development approach and methodology significantly.AJAX (Asynchronous JavaScript), RIA(Rich Internet Applications) and Web Services form the core components of Web 2.0applications.
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