nginx config file for rails + unicorn + gzipped assets + rails caching

vhost.conf

upstream rails {
    server 127.0.0.1:3000;
    #server unix:/tmp/thin.0.sock;
}

server {
    # we haven't checked to see if Rack::Deflate on the app server is
    # faster or not than doing compression via nginx.  It's easier
    # to configure it all in one place here for static files and also
    # to disable gzip for clients who don't get gzip/deflate right.
    # There are other gzip settings that may be needed used to deal with
    # bad clients out there, see http://wiki.nginx.org/NginxHttpGzipModule
    gzip on;
    gzip_http_version 1.0;
    #gzip_proxied any;
    gzip_min_length 500;
    gzip_disable "MSIE [1-6]\.";
    gzip_types text/plain text/html text/xml text/css
               text/comma-separated-values
               text/javascript application/x-javascript
               application/atom+xml;


    # enable one of the following if you're on Linux or FreeBSD
    # listen 80 default deferred; # for Linux
    # listen 80 default accept_filter=httpready; # for FreeBSD
    listen       80 deferred;
    server_name  FIXME_server_name;

    access_log  logs/rails.access.log;

    # ~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;

    root 	     /path/to/rails/public;

    # Prefer to serve static files directly from nginx to avoid unnecessary
    # data copies from the application server.
    #
    # try_files directive appeared in in nginx 0.7.27 and has stabilized
    # over time.  Older versions of nginx (e.g. 0.6.x) requires
    # "if (!-f $request_filename)" which was less efficient:
    # http://bogomips.org/unicorn.git/tree/examples/nginx.conf?id=v3.3.1#n127
    try_files $uri/index.html $uri.html $uri @app;

    location @app {
      # an HTTP header important enough to have its own Wikipedia entry:
      #   http://en.wikipedia.org/wiki/X-Forwarded-For
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

      # enable this if you forward HTTPS traffic to unicorn,
      # this helps Rack set the proper URL scheme for doing redirects:
      # proxy_set_header X-Forwarded-Proto $scheme;

      # pass the Host: header from the client right along so redirects
      # can be set properly within the Rack application
      proxy_set_header Host $http_host;

      # we don't want nginx trying to do something clever with
      # redirects, we set the Host: header above already.
      proxy_redirect off;

      # set "proxy_buffering off" *only* for Rainbows! when doing
      # Comet/long-poll/streaming.  It's also safe to set if you're using
      # only serving fast clients with Unicorn + nginx, but not slow
      # clients.  You normally want nginx to buffer responses to slow
      # clients, even with Rails 3.1 streaming because otherwise a slow
      # client can become a bottleneck of Unicorn.
      #
      # The Rack application may also set "X-Accel-Buffering (yes|no)"
      # in the response headers do disable/enable buffering on a
      # per-response basis.
      # proxy_buffering off;
      proxy_pass        http://rails;
    }

}