If your website is continually changing and you need the freshest most updated version to appear in your user's browser, you can use META tags to disable caching of your page.
This is used often by news and other websites to keep the page reloading each time you open their page. There are several ways to have the browser reload the page each time the user requests it.
The first way is to set the page to expired. An example of this is:
You can also set a future expiration date, after that time, the page will be reloaded by the web browser each time it is requested.
Another useful attribute to prevent caching in Netscape is by using "pragma":
Microsoft Internet Explorer often ignores META tags, versions from 4.01 and down will still cache the page occasionally, but Netscape Navigator will honor the Pragma attribute. Another useful - and sometimes dangerous - attribute is the Refresh attribute. This tag can refresh the present page, or can refresh to a different page measured in seconds.
Two examples are:
