Nginx bandwidth limiting configuration example

Example 1:

http {

   limit_rate 25k;                              # Speed limit per connection 

   limit_zone to_vhost $server_name 1m;         # Total bandwidth limit per domain name 

   limit_conn to_vhost 30;                      # How many threads can be opened per connection 

}

Example 2:

When using Nginx for a download service, you might want to limit the download speed. Nginx can do this:
Start by adding a single item to the http{} configuration:
limit_zone one $10 m binary_remote_addr; Then in the configuration of server{} add:

location / {

limit_conn one 1;  Limit the thread 

limit_rate 100k;  Speed limits 

}

Means the speed limit of 100K only one thread per client is allowed
 
The client end speed =rate * conn, which makes it perfect for bandwidth limiting Settings.
 
Detailed official rules:
http://wiki.nginx.org/NginxChsHttpLimit_zoneModule

Example 3:

Add http{} in nginx.conf

limit_zone one $binary_remote_addr 10m;

And then write it in the virtual machine

location / {

  limit_conn one 1;  thread 

  limit_rate 100k;  speed 

}

   
Means the speed limit of 100K only allows one thread per client

The client final speed =rate * conn, which makes it perfectly possible to set bandwidth limits.