Message Routing Paradigms

[Peter Lund]

EVA (Event and Alarms) are for messages that are meant for the 
human operator to receive. Not to be confused with system internal 
machine to machine communication...

> Eric,
> 
> There is the EVA application within OTP.  I'm sure it's not what you
> are looking for but is an example of "middleware" for messaging in an
> Erlang/OTP system.  The gen_event behaviour is a lower level building
> block.