“In Process” session config, in use, on a small Azure website instance, could it be contributing to performance issues?

Question

Just trying to isolate some performance issues we are getting on our production site.

The current setup is :

Small Standard Website instance(1 core, 1.75gb RAM) MVC3 ASP.NET 4.5 EF5

32bit setup

I am using an "in process" session setup which I understand may be part of my issue. I get slow ups. I monitor the site with New Relic.

My session code, in web.config is:

   <sessionState mode="InProc" timeout="30">
       <providers>
          <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" />
       </providers>
   </sessionState>

I have read that "in Proc" does not work in Azure websites, but it does for me? Whether it works and has issues, I am unsure.

Your advice on the above would be appreciated.

Many thanks.

gbellmann gbellmann · Accepted Answer · 2014-07-01T23:48:48

InProc session management should not be making your site slower, it's the fastest way to manage the session. The InProc session will work OK as long as you have only 1 instance running your code. InProc session is mantained in the server's RAM, so as soon as you start using more than 1 instance, and the load balancer decides to take the user to a different instance than the one she logged in, she will have to log in again (on that new server).

“In Process” session config, in use, on a small Azure website instance, could it be contributing to performance issues?

1 Answers