Output cache functionality is achieved by using “OutputCache” attribute on ASP.NET page header. Below is the syntax.

<%@ OutputCache Duration="20" Location="Server" VaryByParam="state"
VaryByCustom="minorversion" VaryByHeader="Accept-Language"%>

VaryByParam :- Caches different version depending on input parameters send
through HTTP POST/GET.

VaryByHeader:- Caches different version depending on the contents of the
page header.

VaryByCustom:-Lets you customize the way the cache handles page variations
by declaring the attribute and overriding the GetVaryByCustomString handler.

VaryByControl:-Caches different versions of a user control based on
the value of properties of ASP objects in the control.

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Before me is Endless Possibility,
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