If you've ever looked at the headers you receive back from your web server, you may have noticed an Etag. What is it?

An Etag is an "entity tag" and it provides a unique identifier for the resource being supplied. Browser requests can use an etag and an if-match header to check whether a resource has been modified since it was served, providing an efficient caching facility that relies on content rather than on timeouts.
(written 2007-10-03 08:30:34)

 A207 - Web Application Deployment - HTTP

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First Great Western - information for customers
Using a MySQL database to control mod_rewrite via PHP
Static variables in PHP
Simple page password protection - PHP
Etag in http headers - what is it?
Load Balancing with Apache mod_jk (httpd/Tomcat)
Choosing between mod_proxy and mod_rewrite
Python v Ruby
Maidenhead Coffee Challenge
New Month, New Quarter, New Laws
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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