Answer / p.ramakrishna

<%@ OutputCache Duration="60" VaryByParam="None" %>
VaryByParam value

Description

none :One version of page cached (only raw GET)
*: n versions of page cached based on query string and/or
POST body
v1: n versions of page cached based on value of v1 variable
in query string or POST body
v1;v2: n versions of page cached based on value of v1 and
v2 variables in query string or POST body


<%@ OutputCache Duration="60" VaryByParam="none" %>
<%@ OutputCache Duration="60" VaryByParam="*" %>
<%@ OutputCache Duration="60" VaryByParam="name;age" %>
The OutputCache directive supports several other cache
varying options

* VaryByHeader - maintain separate cache entry for
header string changes (UserAgent, UserLanguage, etc.)
* VaryByControl - for user controls, maintain separate
cache entry for properties of a user control
* VaryByCustom - can specify separate cache entries for
browser types and version or provide a custom
GetVaryByCustomString method in HttpApplicationderived class

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