title: Kafka how to consume one topic parallel
body: <p>I read kafka document, still don't know how consume one topic parallel?</p>
  
  <p>Suppose:
  I have one topic like "something happened" (don't split this topic), and I have many customers that want to consume it.
  So what should I do, so that multiple customers can consume it parallel? Should I use partitioning and customer groups?</p>
  
  <p>I have one idea about this, but I'm not sure whether is it right.</p>
  
  <p>Make many partitions about the same topic, and make one partition to one customer, so one producer must produce the same to these partitions, and every customer in the different customer group, is it right?</p>