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![Caching
• Output Caching
– [OutputCache] attribute
– Applies to
• Action methods within Controller
• Or Entire Controller
www.mvcConf.com](https://image.slidesharecdn.com/improvingaspnetmvcperformance-110209104618-phpapp02/75/Improving-ASP-NET-MVC-Application-Performance-12-2048.jpg)
![Caching
• Output Caching
– [OutputCache] attribute
– Applies to
• Action methods within Controller
• Or Entire Controller
www.mvcConf.com](https://gamingcommission.club/image.slidesharecdn.com/improvingaspnetmvcperformance-110209104618-phpapp02/75/Improving-ASP-NET-MVC-Application-Performance-12-2048.jpg)
Uploaded bySteven Smith
Improving ASP.NET MVC Application Performance
You've built an ASP.NET MVC application, but now you want it to go faster and serve more concurrent user requests. In this session, we'll look at some of the common performance problems ASP.NET MVC applications may encounter, and how to diagnose and correct them, using Visual Studio 2010's testing tools. Presented 8 Feb 2010 at MVCConf.com.
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Improving ASP.NET MVC Application Performance
- 1. Improving ASP.NET MVC Application Performance Steve Smith The Code Project SteveSmithBlog.com | @ardalis www.mvcConf.com
- 2. Defining Performance Metrics •Page Execution Time • Requests/Sec • TTLB www.mvcConf.com
- 3. Defining Performance Requirements • A given web request (/Home/Index) • Must return within a given time (TTLB or Page Execution Time) • Under a given load (Requests/Sec + Active Users) • Given system characteristics (50k records) • Resource constraints (< 400 database server requests/sec) www.mvcConf.com
- 4. Performance Requirement • /Home/Index •Must return within 1s Page Execution Time • Given 100 request/sec and base database • With < 200 database requests/sec www.mvcConf.com
- 5. Measure Baseline • Record the Scenario • Set up the Load Test • Run the Test • Analyze the Results www.mvcConf.com
- 6. Baseline Measurement: MVCMusic Store DEMO www.mvcConf.com
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- 8. Find the SlowestPages www.mvcConf.com
- 9. Tuning a WebApplication Define Goal Meets Goal Measure System Stop Does Not Meet Goal Form Hypothesis; Change Only One Thing! Alter System www.mvcConf.com
- 10. Most Common Performance Problems • Database – Too many queries – Queries Not Optimized • Network Requests – From Server to Services – From Browser to Web Server www.mvcConf.com
- 11. Simple but Important •Be sure production DLLs are compiled in Release mode! • Isis.CodePlex.com (still alpha) www.mvcConf.com
- 12. Caching • Output Caching – [OutputCache] attribute – Applies to • Action methods within Controller • Or Entire Controller www.mvcConf.com
- 13. Identify Pages ToCache www.mvcConf.com
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- 15.
- 16. Add Data Caching • Apply to Read operations • Use where Output Caching can’t be used • Consider applying at Repository level • Consider using Sql Cache Invalidation or short cache duration www.mvcConf.com
- 17. What About Writes? •Avoid blocking on writes – Send messages – Use Async calls on server – Use Async/Ajax calls from client • Logically partition reads and writes – Command Query Responsibility Separation (CQRS) www.mvcConf.com
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- 20. What about Async? •Async Actions • AsyncController • Improves scalability • May improve performance www.mvcConf.com
- 21. Comparing MVC andView Engines • MVC 2 Template on MVC 2 – 8135 Requests/sec • MVC 2 Template on MVC 3 – 7987 Requests/sec • MVC 3 Webforms View Engine on MVC 3 – 7457 Requests/sec • MVC 3 Razor View Engine on MVC 3 – 7136 Requests/sec http://blogs.msdn.com/b/marcinon/archive/2011/01/17/mvc-3-performance.aspx www.mvcConf.com
- 22. MVC 3 Performance •Unobtrusive client-side validation on by default • Razor view engine imposes small cost over webforms view engine • Performance improved for: – Expression caching (lambdas) – URL generation – Action lookup – Filter invocation www.mvcConf.com
- 23. MVC Gotchas • AvoidHttpResponse.WriteSubstitution() – Contents may be incorrectly cached – http://haacked.com/archive/2008/11/05/donut-caching-in-asp.net-mvc.aspx – May work with MVC3 + ASPX; not supported; definitely not w/Razor • RenderAction() Cache Bug – Calling an action with OutputCache attribute may result in entire page being cached – http://haacked.com/archive/2009/05/12/donut-hole-caching.aspx www.mvcConf.com
- 24. MVC Performance Tips DisableUnused View Engines • Html.EditorFor, Html.DisplayFor always look for templates for each view engine • Save extra “misses” to disk by removing unused view engines. www.mvcConf.com
- 25. Remove Unused ViewEngines www.mvcConf.com
- 26. MVC Performance Tips AvoidPassing Null to Strongly Typed Views w/Helpers • Helpers like Html.TextBoxFor(m => m.Name) will throw NullReferenceException • Exceptions will be caught/ignored, but may add up to negative performance impact www.mvcConf.com
- 27. Avoid Passing Nullto View www.mvcConf.com
- 28. MVC Performance Tips UninstallIIS UrlRewrite Module • If no applications on the server are using it • No effect in MVC apps before v3 • Enhances speed of URL generation www.mvcConf.com
- 29. Uninstall UrlRewrite (if not used) www.mvcConf.com
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- 31. Summary of PerfGains 300 250 200 Base Release Mode 150 No Null ViewModel 100 1 ViewEngine 50 OutputCache 0 Pages/Sec Page Time (ms) www.mvcConf.com
- 32. Summary • Set Goals – Don’t Optimize Prematurely • Measure and Tune Scientifically • Look for big wins first • Watch out for Gotchas and apply Tips www.mvcConf.com
- 33. References • http://blogs.msdn.com/b/marcinon/archive/2011/01/17/mvc-3-performance.aspx • http://blogs.msdn.com/b/marcinon/archive/2011/02/07/mvc-performance-tips.aspx • http://www.asp.net/mvc/tutorials/improving-performance-with-output-caching-cs • http://www.asp.net/mvc/tutorials/adding-dynamic-content-to-a-cached-page-cs • http://mvcmusicstore.codeplex.com/ • http://isis.codeplex.com/ www.mvcConf.com
- 34. Questions? Tweet Your Questionsto: @ardalis How do I…? #mvcconf Steve Smith ssmith@lakequincy.com SteveSmithBlog.com Twitter: @ardalis www.mvcConf.com