title: Spring MQTT broker
body: <p>I want to implement a MQTT broker as a microservice with Spring. I found this documentation:</p>
  
  <p><a href="http://docs.spring.io/spring-integration/reference/html/mqtt.html" rel="nofollow">http://docs.spring.io/spring-integration/reference/html/mqtt.html</a></p>
  
  <p>but it does not really help. Who has an idea?</p>