How do I prevent web browsers from caching a page?
If timely information is crucial to your web site and you wish to prevent out-of-date content from ever being visible, you need to understand how to prevent web browsers–and proxy servers–from caching pages in the first place. Solutions There are two possible approaches we could take to solving this problem: using HTML meta tags, and using HTTP headers. Using HTML Meta Tags The most basic approach to the prevention of page caching is one that utilizes HTML meta tags: The insertion of a date that’s already passed into the Expires meta tag tells the browser that the cached copy of the page is always out of date. Upon encountering this tag, the browser usually won’t cache the page. Although the Pragma: no-cache meta tag isn’t guaranteed, it’s a fairly well-supported convention that most web browsers follow. However, the two issues associated with this approach, which we’l
