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Future Proof Your Web Application Using Clustered Cache Services
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04/11/2006, By Michael Juntao Yuan
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Easy clustering allows you improve your web application performance today, and more importantly, it can future proof your applications for new Internet architectures, and even new business models. For instance, AJAX (Asynchornous JavaScript and XML) technology significantly improves the usability of web applications.
But to refactor your existing web applications to use AJAX, you should anticipate several folds of increase in web requests. That is because an AJAX page make multiple HTTP requests to the server to partially update the page, as opposed to one request per page in traditional web applications. Another example is the proliferation of SOA (Service Oriented Architecture) web services. Web applications in a SOA infrastructure are used to deliver component services instead of final UIs.
An application typically needs several web service calls across different domains to gather enough information for a web page. As a result, the machine-to-machine interaction in the SOA world generates much more web traffic than the browser-server interaction today. In general, as we move to Web 2.0, web sites become less document-centric and more application-like. Those future needs call for more powerful application servers, and the best way to archive that is through application server clustering.
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