Apache uses that model. It starts up a number of web server processes. When a request comes in, the main process forwards the request to one of the idle child processes*. It handles the request then waits to be asked to process another.

* I think this is optimized such that the implementation -- but not the effect -- differs from the above explanation.

In reply to Re^3: loss of dll in a multi threaded app by ikegami
in thread loss of dll in a multi threaded app by jwetherill

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