Writing a network-aware application isn't difficult, but writing one that is scalable can be challenging. Overlapped I/O using completion ports provides true scalability on Windows NT and Windows 2000. Completion ports and Windows Sockets 2.0 can be used to design applications that will scale to thousands of connections. The article begins with a discussion of the implementation of a scalable server, discusses handling low-resource, high-demand conditions, and addresses the most common problems with scalability.
Anthony Jones and Amol Deshpande
MSDN Magazine October 2000
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