There&#x27;s a really informative discussion about NiFi on the Flow-based Programming mailing list [1].<p>One thing that is discussed is how NiFi, in contrast to &quot;proper FBP&quot;, has only one inport, to which all incoming connections connect, so incoming information packets are merged, and subsequently need to be &quot;routed&quot;.<p>[1] <a href="https:&#x2F;&#x2F;groups.google.com&#x2F;forum&#x2F;#!searchin&#x2F;flow-based-programming&#x2F;nifi&#x2F;flow-based-programming&#x2F;_lQhsJR_Ihg&#x2F;krSGxKgbNqcJ" rel="nofollow">https:&#x2F;&#x2F;groups.google.com&#x2F;forum&#x2F;#!searchin&#x2F;flow-based-progra...</a>