[rabbitmq-discuss] [Q] fanout exchange same as direct with blank routing key?

[Chuck Remes]

My question is in the subject.

I think it might be the same to publish to a direct exchange with an  
empty string routing key as it is to publish to a fanout exchange  
(since fanouts don't honor routing keys). The only difference I can  
think of would be that there might be some matching done against the  
empty string routing key for delivery through the direct exchange that  
is skipped for the fanout exchange. Therefore, a fanout exchange would  
have *slightly* better performance versus a direct exchange with an  
empty routing key.

Anyone know?

cr