Recently, I need to look at an IOCP processing module of middleware, and I need to understand this knowledge
https://www.codeproject.com/articles/13382/a-simple-application-using-i-o-completion-ports-an
http://sysinternals.d4rk4.ru/Information/IoCompletionPorts.html
https://stackoverflow.com/questions/7313702/resources-to-learn-iocp-on-windows