My nginx configuration

default

# /etc/nginx/sites-available/default

upstream my_app_name {
        # fail_timeout=0 means we always retry an upstream even if it failed
        # to return a good HTTP response (in case the Unicorn master nukes a
        # single worker for timing out).

        # for UNIX domain socket setups:
        server unix:/tmp/my_app_name.socket fail_timeout=0;
}

server {
        # if you're running multiple servers, instead of "default" you should
        # put your main domain name here
        listen 80 default;

        # you could put a list of other domain names this application answers
        # server_name my_app_name.example.com;

        root /u/apps/my_app_name/current/public;
        access_log /var/log/nginx/my_app_name_access.log;
        rewrite_log on;

        location / {
                #all requests are sent to the UNIX socket
                proxy_pass  http://my_app_name;
                proxy_redirect     off;

                proxy_set_header   Host             $host;
                proxy_set_header   X-Real-IP        $remote_addr;
                proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;

                client_max_body_size       10m;
                client_body_buffer_size    128k;

                proxy_connect_timeout      90;
                proxy_send_timeout         90;
                proxy_read_timeout         90;

                proxy_buffer_size          4k;
                proxy_buffers              4 32k;
                proxy_busy_buffers_size    64k;
                proxy_temp_file_write_size 64k;
        }

        # if the request is for a static resource, nginx should serve it directly
        # and add a far future expires header to it, making the browser
        # cache the resource and navigate faster over the website
        location ~ ^/assets/  {
                root /u/apps/my_app_name/current/public;
                gzip_static on;
                expires max;
                add_header Cache_Control public;
        }
}

nginx.conf

# /etc/nginx/nginx.conf

user app_user;
worker_processes 2;
pid /var/run/nginx.pid;

events {
        worker_connections 768;
        # multi_accept on;
}

http {
        ##
        # Basic Settings
        ##

        sendfile on;
        tcp_nopush on;
        tcp_nodelay off;
        # keepalive_timeout 65;
        # types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

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

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;

        ##
        # Gzip Settings
        ##

        gzip on;
        gzip_disable "msie6";

        # gzip_vary on;
        gzip_proxied any;
        gzip_min_length 500;
        # gzip_comp_level 6;
        # gzip_buffers 16 8k;
        # gzip_http_version 1.1;
        gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

        ##
        # Virtual Host Configs
        ##

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