Of course this is not the same as Kafka, but the comment I'm replying to:

    > Ah yes, and every consumer should just do this in a while (true) loop as producers write to it. Very efficient and simple with no possibility of lock contention or hot spots. Genius, really.

Seemed to imply that it's not possible to build a high performance pub/sub system using a simple SQL select. I do not think that is true and it is in fact fairly easy to build a high performance pub/sub system with a simple SQL select. Clearly, this design as proposed is not the same as Kafka.