Yes that's true, httpd will be also POE (e.g. POE::Component::Server::HTTP ) I saw that POE::Wheel::Run uses stdin/stdout for communication.
My workers is a perl code so I would pass subroutine reference to Wheel::Run 'Program' argument.
Unfortunately that code may print some debug stuff.

I was thinking about worker code as something similar to:

sub worker{
    my $self = shift;

    while( my $task = $some_queue->dequeue ) {
        
        # do_something() can print debug output to STDOUT
        my $result = $self->do_something();
        
        my $status = { result => $result, time => time(), worker_id =>
+ $self->id};
        $self->update_status( $status);
    }

}
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And parent code something like:

sub parent {
    my $self = shift;

    $some_queue->enqueue( $new_task);
}

sub update_status_event{
    my $status = shift;

    # do something with status
    #...
}
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So I think POE::Wheel::Run for inter-process communication is not enough.
Any advice here?

Thanks,