ASP.NET MVC Performance Tips

In this post, we will discuss how can we increase the performance of website that uses ASP.NET MVC.

1. Remove Unused view engines

   protected void Application_Start() 
   { 
       ViewEngines.Engines.Clear(); 
       ViewEngines.Engines.Add(new RazorViewEngine()); 
   }

2. Deploying Production Code in Release Mode

   Make sure your production application always runs in release mode in the web.config.

   <compilation debug=”false”></compilation>
   <configuration> <system.web> 
   <deployment retail=”true”></deployment> </system.web> </configuration>

3. Use OutputCacheAttribute When Appropriate

   MVC will not do any View Look-up Caching if you are running your application in Debug Mode.

   [OutputCache(VaryByParam = "none", Duration = 3600)]
   public ActionResult Categories() 
   { 
       return View(new Categories()); 
   }

4. Use HTTP Compression

   Add gzip (HTTP compression) and static cache (images, CSS, …) in your web.config.

   <system.webserver><urlcompression dodynamiccompression=”true” 
       dostaticcompression=”true” dynamiccompressionbeforecache=”true”></urlcompression>
   </system.webserver>

5. Avoid passing null models to views

6. Remove unused HTTP Modules

7. ASP.NET MVC ACTION FILTER – CACHING AND COMPRESSION

   Source: ASP.NET MVC ACTION FILTER – CACHING AND COMPRESSION

8. Put repetitive code inside your PartialViews

9. Add an Expires or a Cache-Control Header

   <configuration><system.webServer>
   <staticContent>
   <clientCache cacheControlMode="UseExpires"
   httpExpires="Mon, 06 May 2013 00:00:00 GMT" />
   </staticContent>
   </system.webServer>
   </configuration>

10. Uncontrolled actions

    protected override void HandleUnknownAction(string actionName)
    {
           RedirectToAction("Index").ExecuteResult(this.ControllerContext);
    }

11. Put Stylesheets at the top

12. Put Scripts at the bottom

13. Make JavaScript and CSS External

14. Minify JavaScript and CSS

15. Remove Duplicate Scripts

16. No 404s

17. Avoid Empty Image src

18. Use a Content Delivery Network

    Use either Microsoft, Google CDN for referencing the JavaScript or CSS libraries

19. Use GET for AJAX Requests

20. Optimize Images

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