I was using ViewState in custom developed SharePoint Solution to store date before saving to List because of some requirements. I found that the ViewState value was getting null after some duration which again was unable to meet my requirements. I went through some blogs and found that ViewState is cleared after some duration in SharePoint.

So I Found that 30 minutes by default and then SharePoint ViewState is cleared after.

Turns out that web application has a setting that can be controlled through PowerShell.

$web = Get-SPWebApplication "http://mywebapp..." $web.FormDigestSettings.TimeOut

This is by default 30 minutes and SharePoint Viewstate cache is cleared after

FormDigestSettings.TimeOut +1 (i.e. 31 minutes)

$web.FormDigestSettings.TimeOut = New-TimeSpan -Hours 1 -Minutes 0

Increasing this time out might have some performance implications.

Nice Article Please check this for details.

AppFabric Caching (and SharePoint): Configuration and Deployment (Part 2)


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