迭代Perl哈希键的最安全的方法是什么？

my %hash = (
    key1 => "value1",
    key2 => "value2",
    key3 => "value3"
);

my @keys = keys %hash;

foreach my $key (@keys) {
    my $value = $hash{$key};
    print "Key: $key, Value: $value\n";
}