test.pl6

use v6;
use Net::HTTP::GET;

my Str @urls = "https://www.google.com",
               "https://www.yahoo.com",
               "https://www.microsoft.com";

await Promise.allof: @urls.map: {
    sleep $++;
    start {
        say "---> Making requst to $_";
        my $res = Net::HTTP::GET($_);
        say "<--- Got response from $_ with status code: {$res.status-code}";
    }
}