有时候我们不希望浏览器使用缓存加快网页的显示，尤其是那些论坛之类的频繁更新内容的网页，在网上有说可以使用下面的方法来屏蔽缓存，但是我试了效果不好。
某日我突发奇想，找到了一种在任何情况下都会显示最新的网页内容的方法，描述如下：
请将网页的链接改为：
http://xxx.yyy.zzz/page.php?rand=XXXXXXX
其中http://xxx.yyy.zzz/page.php是你的网页，rand是一个你不会用到的Qurey字串，XXXXXXX是一个随机字串。
也就是说，只要在链接的Url加入了一个不会影响网页的内容的随机字串，从而使得每次访问该网页的Url都不同，从而可以使浏览器不使用缓存中已有的该网页，而使每次显示的都是最新的内容。
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Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
