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Discussion on: Have you built a modular monolith?

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Tomas Tulka

You may check out this project where I tried to build modular monolith based on principles of DDD.
github.com/ttulka/ddd-example-ecom...

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Bertil Muth

I've had a look at it. Pretty impressive in its scope. I had a similar idea to use Spring Events to communicate between the modules. Greetings from/to Munich.

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Tomas Tulka

Thanks!
I have implemented communication via Spring Events in this fork:
github.com/ttulka/ddd-example-ecom...

It's a bunch of services that can be deployed either as a monolithic application or as microservices (docker compose or kubernetes).

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Eckehard

How do you organize the "common sense" in this kind of infrastructure? I assume, there is some kind of eCommerce application locally that will supply some data, so you may need to know some detaily about the data organization. Modules need to know the currency you are using or simply understand each other. I assume you do not want those implementation details in the local code?