JSP tips-Prevent browsers from fetching pages quickly

To speed up the user's browsing speed, the browser often will browse the Web page quickly to the hard disk, the next time to browse the same page, then go to the hard drive to find, but now the Web page is often dynamic, in order to avoid users caught in the hard drive expired data, JSP can be used to prevent the browser to quickly access the Web page, This method guarantees that the user will always be able to see the latest information on the Web page.

1.JSP syntax
<%
Response.setheader ("Pragma", "No-cache");
Response.setheader ("Cache-control", "No-cache");
Response.setdateheader ("Expires", 0);
%>

2. You can also use the following HTML syntax, available on static web pages
<meta http-equiv= "Pragma" content= "No-cache" >
<meta http-equiv= "Cache-control" content= "No-cache" >
<meta http-equiv= "Expires" content= "0" >
Note that these HTML syntax is to be under the