None of that sounds unsurmountable or inherent to microservice architectures. What's hard about starting five JVMs? Why did it take "a while" to register with H

None of that sounds unsurmountable or inherent to microservice architectures. What's hard about starting five JVMs? Why did it take "a while" to register with Hazelcast? Why would you expect to initially come up with bad service boundaries, and why is switching two services you've refactored at once difficult? I think that none of these are problems inherent to microservice architecture, but to someone learning by designing such a system for the first time.