Know agile. Not habit. (जानामि Agile न च मे प्रवृत्तिः)

This is a work in progress. I am designing an event driven architecture to be used in systems using micro services. Micro service architecture is popular because it solves few problems in development process. While it solves some problems it also brings in new problems to the table. Bad designs impact micro services harder than monoliths. But this is thought is for another time.  How micro services talk to each other. In a monolith you have one gigantic database, or you can easily call another component to process the information. In a microservice you can use a Que (or event bus) to pass the information. This is the problem I want to discuss. Main issue with que is it is not designed for this scenario. There are few products which give a good solution by providing a subscription-based approach. But these are large implementations. Using these is similar to bringing an excavator to plant a sapling in your garden. Yes, many people go with using these large implementations to resolve thi