Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
How many worker_processes should I use in Nginx?
Answer:
In the Nginx configuration (nginx.conf), the default worker_processes is 1.
e.g.
worker_processes 1;
However, as nowadays most servers are multi-core/multi-processor machine, it is a waste to only use 1 worker process.
The recommended worker_processes is equal to the number of CPU cores, e.g. if you have a dual Quad Core server, you should set to 8.
worker_processes 8;
How to define variable in nginx
Answer:
nginx provided a very simple way to define custom variable, which can provide a very flexible way to control your web server.
E.g.
set $foo bar;
if ($foo ~ bar) {
# do something
}
Add custom HTTP header by nginx
Answer:
To inject custom HTTP header into the HTTP response, is very easy with nginx.
Add the following line into the configuration (add into the location you need):
E.g.
location / {
add_header Foo Bar;
}
