how nginx handle connection with backend web server?

Weibin Yao nbubingo at
Mon Aug 10 06:59:03 MSD 2009

李学鹏 at 2009-8-10 10:37 wrote:
> hi all
> i have a question that how nginx handle connection with backend web 
> server ?
> for example, i have a nginx server for receiving client request, and 
> reverse proxy to backend 2 web server(such as apache server), every 
> apache server have 100 child process(prefork module). so, if there are 
> 1000 client requests, how nginx map 1000 requests to only 200 apache 
> server process?
Nginx can handle more than 10000 concurrent connections, but apache with 
prefork's max concurrent connections is the number of its process 
number. So Apache will send the 5** error.

Weibin Yao

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