nginx.optimized.conf

worker_processes 4;

events {
  worker_connections 1024;
}

client_body_buffer_size 256K;
client_header_buffer_size 64k;
client_max_body_size 8m;
large_client_header_buffers 8 1024k;

client_body_timeout 12;
client_header_timeout 12;
keepalive_timeout 30;
send_timeout 10;

http {
  sendfile on;
  tcp_nopush on;
  tcp_nodelay on;
  keepalive_timeout 65;
  types_hash_max_size 2048;

  include /etc/nginx/mime.types;
  default_type application/octet-stream;

  access_log off;
  error_log logs/error.log crit;

  gzip on;
  gzip_min_length  1100;
  gzip_buffers  4 32k;
  gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

  include /etc/nginx/conf.d/*.conf;
  include /etc/nginx/sites-enabled/*;

  open_file_cache max=5000 inactive=20s;
  open_file_cache_valid 30s;
  open_file_cache_min_uses 2;
  open_file_cache_errors on;

  upstream load_balancer {
    server 127.0.0.1:3000;
  }

  server {
    server_name localhost;

    location / {
      proxy_buffer_size          4k;
      proxy_busy_buffers_size    64k;
      proxy_temp_file_write_size 64k;

      proxy_set_header Host $http_host;
      proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_read_timeout      210;  # 30 seconds + Unicorn timeout
      proxy_buffers           32 4k;

      proxy_pass http://load_balancer;
    }

    location ~* ^/assets/ {
      root /home/app/jiffyshirts/public;
      expires max;
      add_header Cache-Control public;
      add_header Last-Modified "";
      add_header ETag "";
      gzip_static on;
    }

    location /server-info.txt {
      root /home/app/jiffyshirts/public;
    }
  }
}