title: Can Kafka scale to tens of millions of topics?
body: <p>I'm currently planning the development of a Device Server and am keen to use Kafka, however, I'm unsure if it's capable of supporting a paradigm where there is one topic per device, when there could be 10 million+ devices.</p>
  
  <p>I would expect only one partition per topic and limited required storage (&lt;1MB) per topic. If it makes any difference one topic with millions of partitions could also be considered.</p>
  
  <p>Is anyone able to provide clarification of the scaling limits and expectations of Kafka at this level? In particular, I'm keen to understand the overheads per topic and the effectiveness/feasibility of an individual consumer consuming from ~10k subscribed topics over a single connection.</p>
  
  <p>Any advice much appreciated,
  Many thanks</p>