Not sure if a queue actually helps with scaling components, at least it isn't the only way to scale components. If they are on separate servers you could just s

Not sure if a queue actually helps with scaling components, at least it isn't the only way to scale components. If they are on separate servers you could just send a network call to it. It is the other components problem how to scale itself. It could be split into multiple servers with a load balancer in front of it. Still no queue but you can scale anyway. If it is on the same server the queue will probably not help at all. If you use a service bus you might end up with a kind of queue that has to hold messages from all components to all other components, that is more or less all messages in the system. That might be a big bottleneck that will affect all parts of the system (but you will probably notice very early on).