nginx vhost conf silex & symfony

app.nginx.conf

server {                                                                                                                                                                                       
    listen 80;
    server_name server.mydomain.net
    root /var/www/app/web;
    index index.php;

    location ~ \.php$ {
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        include fastcgi_params;
    }

    location / {
        if (-f $request_filename) {
            expires max;
            break;
        }

        rewrite ^(.*) /index.php last;
    }
}

To avoid the IP stack usage, you can use an Unix socket instead :

fastcgi_pass   unix:/var/run/php5-fpm.sock;

Here is the corresponding listen directive in your PHP-FPM pool's config :

listen = /var/run/php5-fpm.sock

what about the static content in /web folder? (js, css, image files and so on)