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Software Design

Testing WITHOUT Mocks or Interfaces!

A common approach people take with testing is mocking. Specifically defining interfaces for dependencies which are then typically mocked so you can test in isolation. While interfaces can be helpful for mocking as well as fakes and stubs, there can be other approaches taken. Meaning you don’t need to create an interface for everything. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Deterministic Let’s start with a method in an OrderService for creating an Order. To test this method, there are a few dependencies involved. The… Read More »Testing WITHOUT Mocks or Interfaces!

The Challenge of Microservices: UI Composition

One of the most challenging aspects of distributed applications like microservices is UI Composition. How to combine all the data from various services for your UI. I’m going over a few different solutions and their pros and cons for UI Composition and ViewModel Composition. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Multiple Sources When you’re working within a monolith and a single database, we don’t have the issue of compositing data. We get all the data we need from the single source database. As an… Read More »The Challenge of Microservices: UI Composition

What’s enough Complexity for a Domain Model?

Should you be applying domain-driven design? Do you need a domain model? You might want to if you have a lot of complexity within your domain. I often get asked, “what is a lot of complexity?”. I’m going to provide an example by uncovering more and more complexity within a domain. And give a few different insights that should help you make the decision. YouTube Check out my YouTube channel, where I post all kinds of content accompanying my posts, including this video showing everything in this post. Mounting Complexity Through this post, I’m going to illustrate an example using a shipment,… Read More »What’s enough Complexity for a Domain Model?