I agree, it would be best if the extra process wasn’t necessary. However I wasn’t able to come up with a solution for automatically brokering messages in a single process, there are too many complications and you end up back where we started with manual message routing.
The extra process removes this complexity entirely, when it receives a message you know exactly the component its meant for, then it’s tagged as such and relayed to it. And this is opt-in, you wouldn’t use this for the majority of your components.
If you have specific ideas on implementing a single-process message broker I would love to hear them!
