In an RIA, the time to complete a Web page download may no longer correspond to something a user perceives as important, because (for example) the client engine may be prefetching some of the downloaded content for future use.
Standard tools that measure the time for Web page downloads to complete can record misleading data for RIAs. In some cases, the client engine may not even invoke any standard Web page downloads once the application is launched, using asynchronous background communications for all server requests.
To implement RIAs successfully, enterprises must re-evaluate their approach to website performance management. Instead of relying on the definition of physical Web pages to drive the subdivision of application response times, RIA developers or tool users must break the application into logical pages.
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