use Storable;
use Time::Local;

sub go {
    my $storeFile = '/db/users.store';
    my $usersFile = ();
    if ( -e $storeFile ) {
        $usersFile = retrieve( $storeFile );
    }
    
    # Do stuff and return me a precious overview of all my userids and their timestamps
    #
    # userid | timestamp
    # 1337   | Fri Dec 16 12:11:43 2022
    # 1234   | ri Jan 20 09:21:36 2023
    # ...
}