upstream api_servers {
    server 127.0.0.1:9500;
    #
http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive    keepalive 16;
}
server {
    listen 80;
    server_name 
www.yuming.com;
    root /home/yuming/web;
    listen 443 ssl;
    ssl_certificate /etc/nginx/ssl/nginx.crt;
    ssl_certificate_key /etc/nginx/ssl/nginx.key;
    location ~*\.(jpg|gif|png|swf|flv|wma|wmv|asf|mp3|mmf|zip|rar|txt|amr|js|css|html?)$ {
        root /home/yuming/web;
    }
    location / {
          proxy_pass http://api_servers;
          proxy_redirect off;
          proxy_set_header Host $host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          client_max_body_size 10m;
          client_body_buffer_size 128k;
          proxy_connect_timeout 90;
          proxy_send_timeout 90;
          proxy_read_timeout 90;
          proxy_buffer_size 4k;
          proxy_buffers 4 32k;
          proxy_busy_buffers_size 64k;
          proxy_temp_file_write_size 64k;
          proxy_http_version 1.1;
          proxy_set_header Connection "";
    }
}