In this unusual demo, a robot's movement is sent using MQTT and saved in a Kafka topic and then taken from the Kafka topic and saved in a file on a FTP site using Fuse Online integration. The file is then used as the source to playback the movements on the same robot using a small Java program.
The Robot called MAX is described here:
https://hackaday.io/project/160606-hacking-the-meccano-max