Optimized Configuration for NGINX and Ruby on  Rails

Enable gzip compression
Speeds up spawn time tremendously
Keep the spawners alive, which speeds up spawning a new Application
Let nginx handle assets and caching
Disble logs when accessing assets

To test compression:

curl --head -H "Accept-Encoding: gzip" http://example.com




    passenger_root /Users/altair/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.12;
    passenger_ruby /Users/altair/.rvm/wrappers/ruby-1.9.3-p194/ruby;

    passenger_spawn_method smart;
    rails_app_spawner_idle_time 0;
    rails_framework_spawner_idle_time 0;
    passenger_pool_idle_time 1000;
    passenger_max_pool_size 2;

    gzip on;
    gzip_http_version 1.1;
    gzip_comp_level 1;
    gzip_proxied any;
    gzip_vary on;
    gzip_disable "MSIE [1-6].(?!.*SV1)";
    gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript;


    server {
        listen 2500;
        server_name localhost;
        passenger_enabled on;
        root /Users/martiancrafts/Documents/www/build_server/public/;
        #rails_env development;
        location ~ ^/assets/ {
          access_log /dev/null;
          gzip_static on;
          expires max;
          add_header  Cache-Control public;
          add_header  Last-Modified "";
          add_header  ETag "";
          break;
        }
    }