Why the Thread.sleep(1000) in TruckEventsProducer.java after the producer.send()?

[#1]

The TruckEventsProducer code implements a sleep() after each send():

producer.send(data);

Thread.sleep(1000);

Why is this necessary?

[#2 · Accepted solution]

it is for demo purposes, do not include this line in your production code. It's there to simulate new events every one second.