Professional IIS 7.0

Appendix A. Module Reference

The following modules, from Microsoft's IIS 7.0 module reference (www.iis.net/articles/view.aspx/IIS7/Managing-IIS7/Configuring-the-IIS7-Runtime/Configuring-Modules/IIS7-Modules-Overview), ship with Windows Server 2008. Chapter 12 discusses extending IIS 7.0 by adding custom modules.

Utility Modules

These modules do not provide request services, but instead assist the server engine with its internal operation.

Module Name	UriCacheModule
Description	Implements a generic cache for URL-specific server state, such as configuration. With this module, the server will only read configuration for the first request for a particular URL, and reuse it on subsequent requests until it changes.
Configuration Sections	None.
Dependencies	None.
Potential Issues When Removing This Module	Performance loss due to state cached for each URL being retrieved for every request.

Module Name	FileCacheModule
Description	Caches file handles for files opened by the server engine and modules.
Configuration Sections	None.
Dependencies	None.
Potential Issues When Removing This Module	Performance loss. If file handles are not cached the files have to be opened for every request.

Module Name	TokenCacheModule
Description	Caches windows security tokens for password based authentication schemes (anonymous authentication, basic authentication, IIS client certificate authentication).
Configuration Sections	None.
Dependencies	None.
Potential Issues When Removing This Module	Performance loss. The user has to be logged on for ...