Additional notes to coderetreat on Jan 21.1.2022

[rolger]

72

You asked me about the complexity metrics plugin, which I'm using in IntelliJ. This is the link: https://plugins.jetbrains.com/plugin/12159-codemetrics

I added a short notice also to the google docs.

[rolger]

I'm thinking about how to continue the kata from the coderetreat. We have refactored it, and the resut was a hexagonal architecture. Still the business logic (= domain) is part of the application. I'd like to extract the domain and applying a DDD design (aggregates, entities, value objects, or what ever is useful).

Who is interested to join or in the results?

[rolger]

After our CQRS discussion I'm now able to formulate my intention and ideas better then during the last dojo.

• There is a difference between CQRS and CQS (https://www.martinfowler.com/bliki/CommandQuerySeparation.html)
• I was not aware that Commands do not return a value
• I'm looking for patterns for the split-phase refactoring. One pattern is to splitt into a query and the calculation (like in the liftpass kata). I mixed it up with CQS because a calculation is not a Command.

[paulroho]

@rolger I would definitely be interested in joining in here!

[gregorriegler]

@rolger count me in!!!

[goerge]

@rolger I’m very interested in the discussion of the Hexagonal Architecture refactorings and how to separate the domain logic from the app. Maybe I can contribute some insights from a recent project where we aimed for that.

[caichinger]

Same here! Where do I sign up for this? ;)

[dertseha]

This sounds more and more something like a meetup-presentation rather than a Dojo-Kata - curious :)

[redseacomputing]

@rolger Enjoyed the topic on that exercise again afterwards and am curious about the domain part here, too.