I create courses, resources, and articles on advanced front-end and back-end topics like front-end architecture, Domain-Driven Design, effective object-oriented design, and Enterprise Node.js.
Recent articles, letters & posts
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Two Categories of Tests: High Value vs. Typical TestsTesting
It's critical to build a foundational understanding of the different types of tests before investing a ton of time into writing th...
Using Builders to Model Complex Test StatesTesting
Setting up test cases can be extremely challenging. Especially when running E2e tests. In this letter, we learn how to use builder...
How to Improve Legacy Code w/ Characterization TestsTesting
Just like entropy, the natural state of the universe, code has a tendency towards disorder over time. Tests act as a sort of "entr...
The Metaphysical Mental Models: Abstraction & The Feedback LoopThe Metaphysics
The metaphysical mental models describe how we solve problems and bring ideas to life. They are 1) Abstraction, and 2) The Feedbac...
Why You Have Spaghetti CodeDesign
Code that gets worse instead of better over time results from too much divergence & little convergence.
Reality → Perception → Definition → Action (Why Language Is Vital As a Developer)Humans & Code
As developers, we are primarily abstractionists and problem decomposers. Our task is to use language to decompose problems, turnin...
The Code-First DeveloperThe Phases of Craftship
As you improve as a developer, you tend to move through the 5 Phases of Craftship. In this article, we'll discuss the first phase:...
3 Steps to Solve Most Design Problems | How to Find Abstractions EffectivelySoftware Design
You can solve nearly any design problem by getting clear on the responsibilities, assigning them to appropriate roles, and figurin...
Object StereotypesObject-Oriented Design
The six object stereotypes act as building blocks - stereotypical elements - of any design.
98% of Developers Use React as a Framework, Not a LibraryFrontend
React is a view layer library but most developers use it as a framework. Let's look into why that is and the implications of it.
Non-Functional Requirements (with Examples)Object-Oriented Analysis
Non-functional requirements are quality attributes that describe how the system should be. They judge the system as a whole based ...
Responsibility-Driven DesignObject-Oriented Design
Responsibility-Driven Design is the influential object-oriented design method that presents an effective way to turn requirements ...
Is DDD Overrated? | Domain-Driven DesignDomain-Driven Design
DDD is one particular approach to software design. While highly influential and transformational for developers new to software de...
Enforcing Coding Conventions with Husky Pre-commit HooksTooling
In this guide, we'll learn how to setup Husky to prevent bad git commits and enforce code standards in your project.
Domain-Driven GraphQL Schema Design using Event StormingGraphQL
A GraphQL schema is a declarative, self-documenting, organization-wide API. It's pretty important to spend a little bit of time on...
How Apollo REST Data Source Deduplicates and Caches API calls [Deep Dive]GraphQL
Apollo's REST Data Source does a lot more than you'd think behind the scenes, and that's why it's recommended instead of using a w...
How to Setup a TypeScript + Node.js ProjectTypeScript
In this guide, we walk through the process of creating a TypeScript project from scratch with cold-reloading, and scripts for buil...
Where Do Domain Events Get Created? | Domain Driven Design w/ TypeScriptDomain-Driven Design
In this post, I explain how good ol' fashioned encapsulation + TypeScript getters and setters enable us to effectively create Doma...
Recent Blogs
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How to Find and Kill a Background Node Process
Last updated Nov 3rd, 2022
I'm sure you've run into this issue before. You try to a project up but you get an error that looks something like the following: What's…
98% of Developers Use React as a Framework, Not a Library
Last updated Sep 4th, 2022
What’s the difference between a framework and a library? A framework is something that you plug your code into. A library is something that…
How to Setup a TypeScript + Node.js Project
Last updated Aug 29th, 2019
We talk about a lot of advanced Node.js and TypeScript concepts on this blog, particularly Domain-Driven Design and large-scale enterprise…
What Is Hashing?
Last updated May 10th, 2022
Hashing is a technique used to convert a key into another value (typically for cryptographic or data storage purposes). It works by running…
Recently Edited Wikis
view allStateful Tests
Last updated Nov 26th, 2022
Stateful tests are tests against state machines. Ask: "are we testing a transition from one state to another?" or are we just testing "input/output".
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