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Adobe ColdFusion 8 Web Application Construction Kit, Volume 1: Getting Started by Charlie Arehart, Raymond Camden, Ben Forta

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Solutions Provided by ColdFusion

Expanding on the Web application framework—which already sets aside part of the server’s brain to deal with each application—ColdFusion provides three types of variables that help you maintain the state of a user’s visit from page to page and between visits.

Similar to application variables (which you learned about in the last chapter), all three of these are persistent variables because they stay alive between page requests. However, they are different from application variables because they are maintained separately for each browser that visits your site. It’s almost as if ColdFusion had a tiny little part of its memory set aside for each visitor.

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