nginx conf

upstream foo_app_server {
    server unix:/var/run/foo/unicorn.sock fail_timeout=0;
}

# foo Server
server {
    listen 80;
    client_max_body_size 500M;
    server_name _ foo.com ec2-107-20-213-109.compute-1.amazonaws.com *.foo.com;
    gzip  on;
    gzip_http_version 1.0;
    gzip_vary on;
    gzip_comp_level 6;
    gzip_proxied any;
    gzip_types text/plain text/html text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
    # make sure gzip does not lose large gzipped js or css files
    # see http://blog.leetsoft.com/2007/7/25/nginx-gzip-ssl
    gzip_buffers 16 8k;

    # ~2 seconds is often enough for most folks to parse HTML/CSS and
    # retrieve needed images/icons/frames, connections are cheap in
    # nginx so increasing this is generally safe...
    keepalive_timeout 5;

    # path for static files
    root /home/app/rails/foo/current/public;
    access_log /home/app/rails/foo/current/log/nginx.access.log;
    error_log  /home/app/rails/foo/current/log/nginx.error.log;

    # this rewrites all the requests to the maintenance.html
    # page if it exists in the doc root. This is for capistrano's
    # disable web task
    if (-f $document_root/system/maintenance.html) {
      rewrite  ^(.*)$  /system/maintenance.html last;
      break;
    }

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

    location @app {
      proxy_pass http://foo_app_server;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
    }

   location /images/ {
       # serve from disk and set expires
       expires max;
   }

   location /stylesheets/ {
       expires max;
   }

   location /javascripts/ {
       expires max;
   }

   location /system/ {
       expires max;
   }

    # Rails error pages
    error_page 500 502 503 504 /500.html;
    location = /500.html {
      root /home/app/rails/foo/current/public;
    }
}