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ASP.Net 4.0 Core runtime enhancements

This presentation by Sundararajan Subramanian, Associate Technical Architect at Aditi Technologies Ltd., outlines significant enhancements in ASP.NET 4.0, including Application Domain Resource Management (ARM) for better resource monitoring at the application level. It discusses custom request validators and the benefits of using Out-Of-Proc session state compression. Additionally, the talk covers configuring autostart applications in IIS 7.5 and Windows 2008 R2, managing output caching for performance, and extending URL limits. Feedback and questions are welcomed for a comprehensive discussion.

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ASP.Net 4.0 Core runtime enhancements

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  1. ASP.Net 4.0Core runtime enhancements Sundararajan Subramanian Associate Technical Architect |Aditi Technologies Ltd., http://tinyurl.com/codeshelve|sundararajans@hotmail.com

  2. Asp.Net Resource Monitoring • Traditionally monitored at worker process level • No insight into the individual applications sharing the same worker process. • CLR 4 introduces ARM – Application domain resource management • Enables monitoring resources at individual appdomain level

  3. Asp.Net Resource Monitoring • ASP.NET 4 exposes performance counters built on ARM • Managed Memory Used • % Managed Processor Time

  4. Asp.Net Resource Monitoring • Enable ARM in aspnet.config file in the .Net framework directory <?xml version="1.0" encoding="UTF-8" ?> <configuration> <runtime> <appDomainResourceMonitoring enabled="true"/> </runtime> </configuration>

  5. DEMO Resource Monitoring

  6. Extensible Request Validation • Write your own custom Request Validators • Step1: Inherit from System.Web.Util.RequestValidator • Step2: Override IsValidRequestString(….) • Step3: configure custom request validator in web.config <httpRuntimerequestValidationType="Samples.MyValidator, Samples" />

  7. DEMO Request Validation

  8. Session State • Out-Of-Proc Session State Compression • Compressed using GZIP - System.IO.Compression.GZipStream <sessionState mode="SqlServer" sqlConnectionString="data source=dbserver;Initial Catalog=aspnetstate" allowCustomSqlDatabase="true" compressionEnabled="true" />

  9. Auto start Web applications • Intensive operations to be performed when application starts? • First request takes time? • Asp.Net 4 + IIS 7.5 + Windows 2008 R2 – Configure Autostart Web apps

  10. <applicationpools> <add name="defaultappPool" startMode="AlwaysRunning" /> </applicationpools> <sites> <site name="MySite" id="1"> <application path="/" serviceAutoStartEnabled="true" serviceAutoStartProvider="PrewarmMyCache" > <!-- Additional content --> </application> </site> </sites> <!-- Additional content --> <serviceautostartproviders> <add name="PrewarmMyCache" type="MyNamespace.CustomInitialization, MyLibrary" /> </serviceautostartproviders>

  11. Output Caching • Cache the response (output) in memory previously • High memory footprint in case of applications with heavy traffic • Asp.Net 4.0 provides features to write custom output cache providers • Can use any storage mechanism to store HTML content

  12. Output cache • Create Custom output cache provider by inheriting from System.Web.Caching.OutputCacheProvider • Configure the provider in the providers section of the web.config

  13. DEMO Output Caching

  14. URL limit • Previously 260 character limit. • Extend this character limit in Asp.net 4.0 by config • <httpRuntimemaxRequestPathLength="260" maxQueryStringLength="2048" /> • requestPathInvalidChars - Configure the set of valid characters in the url • <httpRuntimerequestPathInvalidChars="&lt;,&gt;,*,%,&amp;,:,\,?" />

  15. Other features • Custom Encoders • encoderType in <httpruntime> element • Object caching • Features of Asp.Net cache brought to other non web applications • RedirectPermanent(..) – HTTP 301

  16. References • Asp.Net http://www.asp.net/

  17. Feedback / QnA • Your Feedback is Important! Please take a few moments to fill out our online feedback form • Use the Question Manager on LiveMeeting to ask your questions now!

  18. Contact (optional slide) • Code snippets blog http://tinyurl.com/codeshelve http://sundars.net • Email Address sundararajans@hotmail.com Twitter - @sundararajans

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