Ian Bicking: the old part of his blog

Re: The Concurrency Model Debate

Actually the 'worker' MPM in Apache 2 uses is mult-process and multi-thhreaded... Its a combination of the traditional 'pre-fork' model and a purely threaded system. It has some advantages, like a crash in one process will not destroy the entire server, and that for the most part you get the advantages of a purely-threaded server.
Comment on The Concurrency Model Debate
by Paul Querna