ASP.NET caching stores frequently accessed data or whole webpages in memory, where they can
be retrieved faster than they could be from a file or database. This helps to improve the performance
and increase the scalability (in terms of number of users serviced) of a web application.
As an example, if you have a product catalog in an e-commerce application, you might consider
putting a lot of the catalog data into cache. Data that changes infrequently and is accessed by
a lot of users is a good candidate for caching. The first access of this data would load it into the
cache; subsequent requests would be served from the cache until the cache expires.
Simple way to use catching is given below :
<%@ Page Language="C#" %>
<%@ OutputCache Duration="60" VaryByParam="None" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, System.EventArgs e) {
Label2.Text = "Present Time: ";
Label2.Text += DateTime.Now.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>asp.net caching example: how to use output caching</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:Red">asp.net example: Output Caching</h2>
<asp:Label
ID="Label1"
runat="server"
Font-Size="Large"
ForeColor="SeaGreen"
Text="Output Caching Duration: 60 seconds."
>
</asp:Label>
<br /><br />
<asp:Label
ID="Label2"
runat="server"
Font-Size="Large"
ForeColor="DodgerBlue"
>
</asp:Label>
</div>
</form>
</body>
</html>
OUTPUT
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