title: How to make fanout in Apache Kafka?
body: <p>I need to send message for all consumers, but before detect who should get this message, how to do that using Kafka?</p>
  
  <p>Should I use Kafks stream to filter data then send to consumers?
  As I know each consumers should be added to unique consumer group, but how to detect in real time, who must receive message ?</p>