nginx if post get

gistfile1.txt

http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout  65;

        upstream myappget {
        server 127.0.0.1:3000;
        server 127.0.0.1:3001;
        server 127.0.0.1:3002;
        }
        upstream myapppost{
        server 0.0.0.0:4000;
        }

        server {
        listen   80;
        server_name wendaodev.zhaopin.com;

        access_log /var/www/html/quora//log/access.log;
        error_log  /var/www/html/quora/log/error.log;
        root       /var/www/html/quora/;
        index      index.html;

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
                root   html;
        }

        location / {
                proxy_set_header  X-Real-IP  $remote_addr;
                proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header  Host $http_host;
                proxy_redirect    off;
                try_files /system/maintenance.html $uri $uri/index.html $uri.html @ruby;
        }

        location @ruby {
                if ($request_method = POST)
                {
                    proxy_pass http://myapppost;
                        break;
                }

                if ($request_method = GET )
                {
                    proxy_pass http://myappget;
                        break;
                }


        }
}
}
                                                                                                                                                      

https://www.nginx.com/resources/wiki/start/topics/depth/ifisevil/
http://agentzh.blogspot.com.co/2011/03/how-nginx-location-if-works.html
http://nginx.org/en/docs/http/ngx_http_core_module.html#try_files