I'm looking for a caching for IIS similar to the Varnish.. But as Varnish is not recommended on Windows, I would like to have suggestions as what are the other alternatives that can be used for performance optimization of ASP.net web applications & websites that are similar & powerful as Varnish.
closed as off topic by Shane Madden, mdpc, Ward, Khaled, dunxd Jan 7 '13 at 10:57
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Why do you think you need that when IIS - actually windows - has an output cache already included IN THE KERNEL (http.sys can do caching)?
Is there a real need, or is this a demonstration of you now really knowing how to program in IIS and ASP.NET because you totally did not read the documentation, including the part of the output cache?
Let me help you:
is a good start. You can cache, invalidate by parameter, do partial caching in a page (i.e. only those parts that do not change). It is all there out of the box. Never saw a need for external additional caching.
Now, maybe there IS something special that you need that asp.net does not, but bear with me - I doubt.