IIS: web applications warmup

After IIS reset, first hit taking a long time because AppPool is starting and other .NET components, DB connections are initializing.

What would be the best way to warm up IIS applications and preload required components (e.g. GAC Assemblies, WCF, WWF libraries)

I’m working on IIS 6, Windows 2003 server x64

(I know there is warmup module for IIS 7, but I’m on IIS 6.how that warmup module in IIS 7 works internally?)


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Method 1

Some tips on warm up scripts:


More info on the IIS site:


Check out the latest news under “Auto-Start Web Applications” section here:


Method 2

For IIS 7.5 you can using the Application Warmup Module –


Method 3

You will find the script posted on http://blogs.msdn.com/joelo/archive/2006/08/13/697044.aspx.
Though it is meant for sharepoint but it will work just as fine with any IIS web project.
You may need to adjust the file to make it hit the different applications pages you want.

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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