SharePoint Warm Up Script

I have had a lot of people use my other warm up script that I created almost a year ago but several people have asked for one that actually works…doh.  You see, my old one just used the WebRequest object to hit the site.  That does NOT warm up the site.  You actually need to get content from the page first. 

This new script is a complete one that can be scheduled on your WFEs.  If you didn’t know already, all the Application Pools that get created are scheduled to reset themselves at a certain time.  Usually around 2 AM in the morning.  So if you want, take this script and put it in a CMD or BAT file and put an IISRESET right in front of it.  Then, add the code I have provided in a PS1 script and you are off and gunning.  You can remove those app pool recycles that are scheduled.

Save the following in a script named SPWarmUp.ps1

############################################################################
#Assumptions:
#-Running on machine with WSS/MOSS
#-C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\BIN in path
############################################################################
function get-webpage([string]$url,[System.Net.NetworkCredential]$cred=$null)
{
    $wc = new-object net.webclient
    if($cred -eq $null)
    {
        $cred = [System.Net.CredentialCache]::DefaultCredentials;
    }
    $wc.credentials = $cred;
    return $wc.DownloadString($url);
}

#This passes in the default credentials needed. If you need specific stuff you can use something else to
#elevate basically the permissions. Or run this task as a user that has a Policy above all the Web Applications
#with the correct permissions
$cred = [System.Net.CredentialCache]::DefaultCredentials;
#$cred = new-object System.Net.NetworkCredential("username","password","machinename")

[xml]$x=stsadm -o enumzoneurls
foreach ($zone in $x.ZoneUrls.Collection) {
    [xml]$sites=stsadm -o enumsites -url $zone.Default;
    foreach ($site in $sites.Sites.Site) {
        write-host $site.Url;
        $html=get-webpage -url $site.Url -cred $cred;
    }
}

When you schedule this to run through a scheduled task, make sure the user running this has the correct credentials on the sites being hit.  Obviously, make sure this is on ALL WFEs. 

Can you test this without all the other stuff?  Sure, just copy and paste the code and put it in to PowerShell and give it a whirl.

Download the file here