Nginx also has a variety of options for outbound traffic management:
To enable most of these functions, the first thing you need is to declare your upstream servers explicitly.
Nginx allows you to declare upstream servers explicitly. You can then refer to them multiple times as a single entity from any part of the
http configuration. If the location of your server or servers changes, there is no need to go over the entire configuration and adjust it. If new servers join a group, or existing servers leave a ...