//specify your connection name here
    'rabbit_demo'=>[
            'driver'=>'rabbit',//driver must by rabbit
            'connection'=>'default',
            'host'=>'localhost',
            'port'=>5672,
            'username'=>'guest',
            'password'=>'guest',
            'queue'=>'privilege_demo',//specify your queue name here 
            'exchange'=>'basic_exchange',
            'routing_key'=>'privilege_demo',
        ]

    dispatch(new DemoJob())->onConnection('rabbit_demo')->onQueue('privilege_demo');