KHALIL STEMMLER

Currently

Spinning "Virgo's Maze" by Part Time

Reading "Patterns of Enterprise Application Architecture" by Martin Fowler

🚨 I'm writing a book! 📗

Introduction to software architecture & design principles with Node.js and TypeScript

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Advanced TypeScript & Node.js best practices for large-scale applications. Learn to write flexible, maintainable software.

I create courses, books, and articles for aspiring developers on Enterprise Node.js, Domain-Driven Design and writing testable, flexible JavaScript.

recent articles

There Is No Dominant Paradigm | Software Professionalism Software Professionalism

Jul 11th, 2019 / 9 min read

Functional programming is not the end to all of our problems. Quality software is all three paradigms.

by Khalil Stemmler

Intention Revealing Interfaces [w/ Examples] - Domain-Driven Design w/ TypeScript Domain-Driven Design

Jul 9th, 2019 / 10 min read

ddd typescript intention revealing interfaces

An intention revealing interface is a standard for writing code that is expressive enough to adequately explain it's purpose witho...

by Khalil Stemmler

Better Software Design with Application Layer Use Cases | Enterprise Node.js + TypeScript Enterprise Node + TypeScript

Jun 25th, 2019 / 16 min read

node.js typescript use cases enterprise software

In this article, we explore how organizing application logic as Use Cases in the application layer helps to make large typescript ...

by Khalil Stemmler

Implementing DTOs, Mappers & the Repository Pattern using the Sequelize ORM [with Examples] - DDD w/ TypeScript Domain-Driven Design

Jun 20th, 2019 / 14 min read

ddd typescript software design

There are several patterns that we can utilize in order to handle data access concerns in Domain-Driven Design. In this article, w...

by Khalil Stemmler

Name, Construct & Structure | Organizing Readable Code - Part 1 Software Design

Jun 15th, 2019 / 6 min read

typescript javascript

Naming files & folders well, using well-understood technical constructs and strategically organizing files well are three ways to ...

by Khalil Stemmler

Domain Knowledge & Interpretation of the Single Responsibility Principle | SOLID Node.js + TypeScript Software Design

Jun 13th, 2019 / 8 min read

solid software design advanced object-oriented programming

The Single Responsibility Principle specifies that a class or function should only have one reason to change. Admittedly, that's n...

by Khalil Stemmler

🚨 I'm writing a book! 📗

Introduction to software architecture & design principles with Node.js and TypeScript

Get the free ebook

recently edited wikis

Conway's Law

Updated Jul 3rd, 2019 / 3 min read

architecture software design software architecture

Any organization that designs a system (defined more broadly here than just information systems) will inevitably produce a design whose structure is a copy of the organization's communication structure.

Active Record

Updated May 25th, 2019 / 1 min read

software design enterprise application architecture

An `Active Record` is a model that stores an in-memory representation of a database row or document.