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Derek Comartin

Event Sourced Aggregate Design: Focus on Business Logic

Separating data and behaviors can have a pretty profound impact on your design. An Event Sourced Aggregate allows you to focus on business logic by having capabilities to produce data (Events). Event Sourcing does exactly this by limiting the amount of state you require only to that needed for business logic within an Aggregate. YouTube Check out my YouTube channel where I post all kinds of content that accompanies my posts including this video showing everything that is in this post. Shipment Before jumping in code, the example I’m going to use is of a shipment. The simple setup is you have… Read More »Event Sourced Aggregate Design: Focus on Business Logic

Restructuring to a Vertical Slice Architecture

What is vertical slice architecture and how does it compare to clean architecture? Ultimately it’s about coupling and dependencies. With vertical slice architecture, you’re organizing your code across a feature rather than layers. The focus is on features and capabilities rather than technical concerns. Coupling is limited by the scope of the feature and the size of the vertical slice. YouTube Check out my YouTube channel where I post all kinds of content that accompanies my posts including this video showing everything that is in this post. Clean Architecture Before jumping into Vertical Slice Architecture let me first talk about Clean Architecture… Read More »Restructuring to a Vertical Slice Architecture

Software Architecture Q&A: Microservices, CQRS & More!

You have questions, I have answers… well mainly opinions! Here are the top questions I was asked for this Software Architecture Q&A. As you can expect they are around Microservices, Messaging, CQRS & Event Sourcing. YouTube Check out my YouTube channel where I post all kinds of content that accompanies my posts including this video showing everything that is in this post. What is the difference between SOA and Microservices? I get this question often and I was expecting it for this Software Architecture Q&A. I believe it’s because of how I present Event Driven Architecture in relation to Microservices. The answer… Read More »Software Architecture Q&A: Microservices, CQRS & More!