get '/test' => sub {
  my $self = shift;
  srand;
  my $random_string=rand 10;
  $self->render(text => $random_string."\n");
};

[becks@zappa dummy_client]$ curl   http://127.0.0.1:3000/test
2.54768867119314
[becks@zappa dummy_client]$ curl   http://127.0.0.1:3000/test
9.63220070422725
[becks@zappa dummy_client]$ curl   http://127.0.0.1:3000/test
6.55116524853842
[becks@zappa dummy_client]$ curl   http://127.0.0.1:3000/test
7.47458345330418