IIS 7.5 Application Warm-Up

IIS Application Warm-Up for IIS 7.5 enables IT Professionals to improve the responsiveness of their Web sites by loading the Web applications before the first request arrives.
By proactively loading and initializing all the dependencies such as database connections, compilation of ASP.NET code, and loading of modules, IT Professionals can ensure their Web sites are responsive at all times even if their Web sites use a custom request pipeline or if the Application Pool is recycled.
Decrease the response time for first requests by pre-loading worker processes
IIS Application Warm-Up allows IT Professionals to configure the Web application to be pre-loaded at the start of the Web server before the first request arrives. By pre-loading the application, the worker process is able to reduce the time it takes to respond to the first Web request. The loading and initialization of the dependencies such as database connections, .NET Framework, and the just-in-time compilation for ASP.NET applications and dependencies have already been performed by the time the request arrives to the server.
Increase reliability by pre-loading worker processes when Overlapped Recycling occurs
The response times for the first requests in an Overlapped Recycling scenario are reduced by also pre-loading dependencies. The recycled worker process will only communicate its readiness and will start accepting requests after it finishes loading and initializing the resources as specified by the configuration.
Customize the pre-loading of applications
 IIS Application Warm-Up can be configured to initialize Web applications by using specific Web pages and user identities. This makes it possible to create specific initialization processes that can be executed synchronously or asynchronously depending on the initialization logic. In addition, these procedures can use specific identities in order to ensure a proper initialization.

Integration with IIS Manager
Configuration settings are stored in the shared configuration file
Web application pre-loading settings can be configured on a per Web application basis.
Use the default or custom identities to pre-load the application.