[tinco]

I'm going to say no. You can have multiple WWW/API nodes, but that's not the main issue. The different daemons, they have to be able to connect to eachother, and the Redis/DB/SMTP nodes, they're simply one of the microservices. There could be any number of DB nodes. Every micro service might have their own persistant storage or caching mechanism.

Might have, not must have, of course.

To really show the merit of microservices, this must really be reflected in your drawing.