MVC: First Access After Some Minutes Slow, Then Every Following Request Is Fast?

Jul 30, 2010

when I access any page of my ASP.NET MVC website first time, then this first request is slow. It needs about 4-5 seconds to load. But every following request to any page is fast.When I wait some minutes or a hour then every first request is slow again. Every following request is fast.

I think that IIS 7 is compiling the code and keep it in memory. After some time it will delete it from memory so it needs to compile it again.What can I do that every first request is as fast as every following request?
(Without precompiling my source, if possible)

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Source Error:

[Code]....

Stack Trace:

[Code]....

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<SelectParameters>
<asp:QueryStringParameter
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Type="Decimal"
/>
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