nginx

site

upstream app_server {
  server unix:/path/to/app/tmp/sockets/unicorn.sock;
}

server {
  server_name app.com;

  root /path/to/app/public;
  
  access_log  /var/log/nginx/app.access.log  main;
  error_log  /var/log/nginx/app.error.log warn;

  location / {
    try_files index.html $uri @app;
  }

  location ~ ^/(images|javascripts|stylesheets)/  {
    expires 24h;
    add_header Cache-Control public;
  }

  location ~ ^/assets/ {
    access_log off;
    expires 7d;
    add_header Pragma public;
    add_header Cache-Control "public";
  }

  location @app {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;

    proxy_pass http://app_server;
  }
}