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Derek Comartin

Long live the Monolith! Monolithic Architecture != Big Ball of Mud

If you’re developing a Monolith or using a Monolithic Architecture doesn’t mean it needs to be a big ball of mud. Most people equate a Monolith with a Big Ball of Mud because it’s highly coupled and difficult to change. However, you can combat it by defining strict boundaries and logically decoupling those boundaries and the data that each boundary owns. To go even further you can loosely couple by leveraging asynchronous messaging between boundaries. Does this sound familiar? Like Microservices where each service has its defined capabilities and database? YouTube Check out my YouTube channel where I post all kinds of… Read More »Long live the Monolith! Monolithic Architecture != Big Ball of Mud

Should you use the Repository Pattern? With CQRS, Yes and No!

The repository pattern is polarizing. Some developers swear you should always use it to abstract data access logic while others think it’s unnecessary if you’re using an ORM. So should you use it? My answer is Yes and No! If you’re applying CQRS and Vertical Slice Architecture you’ll likely want a repository to build up Aggregates. However, for a Query, you may want to just get the data you need rather than an entire aggregate (or collection of aggregates) to build a view model. YouTube Check out my YouTube channel where I post all kinds of content that accompanies my posts including… Read More »Should you use the Repository Pattern? With CQRS, Yes and No!

Should you publish Domain Events or Integration Events?

Common advice is to not publish domain events outside of your service boundary. They should only exist within your service boundary. Instead, you should publish integration events for other service boundaries. While this general advice makes sense, it’s not so cut-and-dry. There are many reasons why you would want to publish domain events for other services to consume. Here are how I think of Domain Events and Integration Events and when to use them. 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. Domain… Read More »Should you publish Domain Events or Integration Events?