coro.pl

use Mojolicious::Lite;
use Coro;
use Coro::EV;
use Coro::Timer;

my $old = app->on_process;
app->on_process(
  sub {
    my ($self, $c) = @_;
    async { $self->$old($c) };
  }
);

get '/' => sub {
  my $self = shift;
  Coro::Timer::sleep(3);
  $self->render(text => '3 second delay.');
};

app->start;