Re: A HOWTO on Optimizing PHP with tips and methodologies
The PHP Anthology Volume 2, Chapter 5 - Caching
By Harry Fuecks
February 16th 2004
Reader Rating: 8.8
In the good old days, back when building Websites was as easy as knocking up a few HTML [1] pages, the delivery of a Web page to a browser was a simple matter of having the Web server fetch a file. A site's visitors would see its small, text-only pages almost immediately, unless they were using particularly slow modems. Once the page was downloaded, the browser would cache [2] it somewhere on the local computer so that, should the page be requested again, after performing a quick check with the server to ensure the page hadn't been updated, the browser could display the locally cached version. Pages were served as quickly and efficiently as possible, and everyone was happy (except those using 9600 bps modems).
The advent of dynamic Web pages spoiled the party, effectively "breaking" this model of serving pages by introducing two problems:
http://www.sitepoint.com/print/php-anthology-2-5-caching
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