$key = md5($key);

perl_set $md5_uri 'sub { 
      use Digest::MD5 qw(md5_hex); 
        my $r = shift;  
        my $args=$r->args; 
        return md5_hex($args); 
     }';

user  nginx;
worker_processes  1;
worker_rlimit_nofile 100000;

error_log   /var/log/nginx/error.log;
#error_log  /var/log/nginx/error.log  notice;
#error_log  /var/log/nginx/error.log  info;

pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
    use epoll;
}


http {

    perl_set <strong>$md5_uri</strong> 'sub { 
      use Digest::MD5 qw(md5_hex); 
        my $r = shift; 
        my $uri=$r->uri; 
        my $args=$r->args; 
        return md5_hex($args); 
     }';
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;
 
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;
    client_max_body_size 100m;
    sendfile        on;
    tcp_nopush      on;
    tcp_nodelay     on;
    server_tokens   off;
    gzip            on;
    gzip_static     on;
    gzip_comp_level 5;
    gzip_min_length 1024;
    keepalive_timeout  65;
    gzip_proxied        any;
    gzip_types          text/plain text/html text/xml application/xml application/x-javascript text/javascript text/css text/json;
    gzip_disable        "msie6";
    charset             utf-8;
    limit_conn_zone   $binary_remote_addr  zone=addr:10m;

    # Load config files from the /etc/nginx/conf.d directory
    include             /etc/nginx/conf.d/*.conf;
    include             /etc/nginx/sites-enabled/*;


}

upstream backend-test {server unix:/var/run/php5-test.sock;}
server {
    listen              80;
    server_name         test.ru;
    root                /var/www/test/www;
    access_log          /var/log/nginx/test-access.log;
    error_log           /var/log/nginx/test-error.log;
    index               index.php index.html;
    rewrite_log         on;
    if ($host != 'test.ru' ) {
        rewrite  ^/(.*)$  http://test.ru/$1  permanent;
    }
    location ~* ^/core/ {
        deny all;
    }
    location / {
        try_files       $uri $uri/ @rewrite;
    }
    location @rewrite {
        rewrite         ^/(.*)$ /index.php?q=$1;
    }
    
      location ~ \.php$
    {
        default_type            text/html;
        set  $memcached_key       "default/test_<strong>$md5_uri</strong>";
        # где test_ это cache_prefix
        memcached_pass unix:///var/run/memcached/mem.socket;
        error_page     404 401 405 502 504 = @php;
    } 

    location @php {

        include         fastcgi_params;
        fastcgi_param   SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_pass    backend-test;
    }
    location ~* ^.+\.(jpg|jpeg|gif|css|png|js|ico|bmp)$ {
       access_log       off;
       expires          10d;
       break;
    }
    location ~ /\.ht {
        deny            all;
    }
}