Performance Tuning though Pipeline Optimization in ASP.NET

You should add more ideas or at least edit the content significantly instead of copying and pasting from another article, my article that is:

10 ASP.NET Performance and Scalability Secrets[^]

==================

There are several ASP.NET default HttpModules which sit in the request pipeline and intercept each and every request. For example, SessionStateModule intercepts each request, parses the session cookie and then loads the proper session in the HttpContext. Not all of these modules are always necessary. For example, if you aren't using Membership and Profile provider, you don't need FormsAuthentication module. If you aren't using Windows Authentication for your users, you don't need WindowsAuthentication. These modules are just sitting in the pipeline, executing some unnecessary code for each and every request.

The default modules are defined in machine.config file (located in the $WINDOWS$\Microsoft.NET\Framework\$VERSION$\CONFIG directory).

<httpModules>
  <add name="OutputCache" type="System.Web.Caching.OutputCacheModule" />
  <add name="Session" type="System.Web.SessionState.SessionStateModule" />
  <add name="WindowsAuthentication"
        type="System.Web.Security.WindowsAuthenticationModule" />
  <add name="FormsAuthentication"
        type="System.Web.Security.FormsAuthenticationModule" />
  <add name="PassportAuthentication"
        type="System.Web.Security.PassportAuthenticationModule" />
  <add name="UrlAuthorization" type="System.Web.Security.UrlAuthorizationModule" />
  <add name="FileAuthorization" type="System.Web.Security.FileAuthorizationModule" />
  <add name="ErrorHandlerModule" type="System.Web.Mobile.ErrorHandlerModule,
                             System.Web.Mobile, Version=1.0.5000.0,
                             Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
</httpModules>

You can remove these default modules from your Web application by adding <remove> nodes in your site's web.config. For example:

<httpModules>
         <!-- Remove unnecessary Http Modules for faster pipeline -->
         <remove name="Session" />
         <remove name="WindowsAuthentication" />
         <remove name="PassportAuthentication" />
         <remove name="AnonymousIdentification" />
         <remove name="UrlAuthorization" />
         <remove name="FileAuthorization" />
</httpModules>

The above configuration is suitable for websites that use database based Forms Authentication and do not need any Session support. So, all these modules can safely be removed.