The document discusses the architecture and performance improvements of IIS 6.0 over previous versions. Key points include: IIS 6.0 uses a new process model with HTTP.sys, WAS, and worker processes to improve isolation and reliability. Features like application pools, recycling, and health monitoring enhance availability. ASP.NET applications benefit from this new architecture and best practices like caching, logical tiered design, and limiting server controls improve performance.

1. Building Scalable And High Performance Web Applications on IIS 6.0 And ASP.NET Rishi Kothari

5. IIS 6.0 Architecture

7. Rearchitecting IIS A review of IIS5 TCP/IP kernel user WinSock 2.0 DLLHost.EXE ISAPI Extensions DLLHost.EXE ISAPI Extensions INETINFO.EXE Metabase ISAPI Filters and Extensions DLLHost.EXE ISAPI Extensions INETINFO.EXE Metabase ISAPI Filters and Extensions

12. Process Model Contrast IIS5 to IIS6 – Making it more robust HTTP.SYS TCP/IP Connections Requests User Mode Kernel Mode WAS ASP.NET Filters Worker Process ASP.NET Filters Worker Process ASP.NET Filters Worker Process INETINFO metabase AppPool 1 AppPool 2

13. IIS 6.0 Availability Enhancements

16. Recycling Overlapping Recycle kernel user Ready for Recycle Shut down WAS HTTP.SYS Old Worker Process ISAPI Exts & Filters Web Proc. Core DLL New Worker Process ISAPI Exts & Filters Web Proc. Core DLL Request startup ready Request

18. ASP.NET Best Practices

20. Logical/Physical Design Best Practices

23. 3 Tier Deployment Numbers

24. Server Control Performance Recommendations

26. Control Rendering Test

27. Caching Performance Best Practices

30. Dynamic Kernel Caching GET http://www.acme.com/store/sproketcatalog.aspx Without Cache <%@ OutputCache Duration=&quot;10&quot; VaryByParam=&quot;none&quot; %> Request Response With Cache Request Response