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Derek Comartin

Have you replaced your DB because of the Repository Pattern?

Have you been able to replace your database implementation transparently because of the use of the repository pattern? While this is a controversial question and topic, I will explain why it doesn’t need to be. Sure, you’re creating an abstraction, but an abstraction around what? YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Repository Pattern First, we need to agree on the definition of the Repository Pattern. I will use the definition in the Patterns of Enterprise Application Architecture. Conceptually, a Repository encapsulates the set of… Read More »Have you replaced your DB because of the Repository Pattern?

Distributed isn’t Microservices, In-Process isn’t a Monolith

Amazon Prime Video moved one of its monitoring services from “microservices” to a “monolith”. I’m using quotes because that’s how they termed it in the post, which did themselves a disservice by making this statement. Almost every blog post or video covering this has missed the mark. All they did was refactor. This has nothing to do with microservices or a monolith. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Original Architecture You can check out the original blog post from Amazon Prime Video, but here’s… Read More »Distributed isn’t Microservices, In-Process isn’t a Monolith

The pendulum swings! Microservices to Monoliths

We moved from monoliths to microservices a decade ago, and there has been a swing back to either consolidating microservices or moving to a modular monolith. This isn’t surprising. Why is this happening? I will explain why logical boundaries don’t have to be physical. Once we finally make this distinction, it opens up many possibilities. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Physical Boundaries One of the good things that came from microservices is defining boundaries. Good fences make good neighbors, as the saying goes.… Read More »The pendulum swings! Microservices to Monoliths