WebSphere Application Server Web server plug-in

What is the WebSphere Application Server Web server plug-in?
The IBM® WebSphere® Application Server Web server plug-in is the “glue”
between a Web server and WebSphere Application Server. The primary
responsibility of the plug-in is to forward HTTP requests from the Web server to
the WebSphere Application Server. The plug-in is shipped along with a
WebSphere Application Server installation CD and is comprised of a native
library. Although the plug-in code varies with the Web server type and the
operating system that it’s running on, its overall functionality remains the same.
Who should read this document?
This is a technical paper intended for audiences such as application developers,
architects, system administrators or anyone wanting to understand or debug the
plug-in. Although this paper has been written and tested for WebSphere
Application Server V5, it will be very useful for Version 4 users as well.
This paper puts special emphasis on understanding and rectifying failure
situations related to the plug-in, especially such failures which are caused due to
overloaded or hung systems.