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Reliable process, high overhead

Thread sharing memory, low overhead

The co-process overhead is even smaller, and Python and go have

Apache is a multi-process, Prework mode is a process that processes a request

Nginx is also a multi-process mode, one master, multiple Woker, but joins asynchronous nonblocking mode

MySQL uses multi-threading, but you can see many processes in Photoshop, because MySQL is always a single-process, multi-threaded mode of operation. Only, Linuxthreads is not a real thread, so these processes actually use the system call Clone () to share the same address space. Although the result of using PS view seems to be multi-process, in fact mysqld the real way of working is multithreading.

http://blog.csdn.net/davissuperman/article/details/40738507

Http://www.cnblogs.com/lianzhilei/p/6029100.html

http://blog.csdn.net/lishenglong666/article/details/8557215

Process Line Cheng