Routing not working in production evironment

Hi,

I just moved from development to production. I realized my routing is not working in the production environment. I am using a LEMP stack.

Can anyone guide me in the right direction?

This is my nginx configuration.

server {

    listen   80;
    server_name localhost;
    charset utf-8;
    index index.php index.html index.htm;
    set $root_path '/usr/share/nginx/ppl/public';
    root $root_path;

    try_files $uri $uri/ @rewrite;

    location @rewrite {
        rewrite ^/(.*)$ /index.php?_url=/$1;
    }

    location ~ \.php {
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index /index.php;
        #fastcgi_pass 127.0.0.1:9000;
        include /etc/nginx/fastcgi_params;

        fastcgi_split_path_info       ^(.+\.php)(/.+)$;
        fastcgi_param PATH_INFO       $fastcgi_path_info;
        fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }

    location ~* ^/(css|img|js|flv|swf|download)/(.+)$ {
        root $root_path;
    }

    location ~ /\.ht {
        deny all;
    }
}

Here is my routing code snippet.

$di->set('router', function () {
    $router = new Router();

    $router->add(
        '/list/([0-9]+)/([a-z0-9\-]+)',
        array(
            'controller' => 'Listing',
            'action'     => 'detailed',
            'id' => 1,
            'title' => 2

        )
    );   
    $router->add('/', array(
        'controller' => 'Listing',
        'action' => 'home'
    )); 

    $router->removeExtraSlashes(true);
    return $router;
},true);

I am able to access the controller and respective actions via url.

Is there anything important that i am missing?

Thanks all.