Load Balancing

This config has 2 servers my.server1.com and my.server2.com and combines them. Nginx proxies that group of servers under the name http://server_group this can be renamed. In this config it uses weight which routes 3 requests to my.server1.com before routing 1 to my.server2.com

http   {
  upstream server_group   {
    server my.server1.com weight=3;
    server my.server2.com;
  }
  server  {  
    location / {   
        proxy_pass http://server_group;  
    }    
  }
}