
Contents > Developing ColdFusion MX Applications > Designing and Optimizing a ColdFusion Application > Optimizing ColdFusion applications > Caching ColdFusion pages that change infrequently

Caching ColdFusion pages that change infrequently

Some ColdFusion pages produce output that changes infrequently. For example, you might have an application that extracts a vendor list from a database or produces a quarterly results summary. Normally, when ColdFusion gets a request for a page in the application, it does all the business logic and display processing required to produce the report or generate and display the list. If the results change infrequently, this can be an inefficient use of processor resources and bandwidth.

The cfcache tag tells ColdFusion to cache the HTML that results from processing a page request in a temporary file on the server. This HTML does not need to be generated each time the page is requested. When ColdFusion gets a request for a cached ColdFusion page, it retrieves the pregenerated HTML page without having to process the ColdFusion page. ColdFusion can also cache the page on the client. If the client browser has its own cached copy of the page from a previous viewing, ColdFusion instructs the browser to use the client's page rather than resending the page.

Note: The cfcache tag caching mechanism considers each URL to be a separate page. Therefore, http://www.mySite.com/view.cfm?id=1 and http://www.mySite.com/view.cfm?id=2 result in two separate cached pages. Because ColdFusion caches a separate page for each unique set of URL parameters, the caching mechanism accommodates pages for which different parameters result in different output.


Contents > Developing ColdFusion MX Applications > Designing and Optimizing a ColdFusion Application > Optimizing ColdFusion applications > Caching ColdFusion pages that change infrequently

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