Lukas Niessen

ArchUnitTS

I created and maintain ArchUnitTS, a software architecture testing library. It helps enforce architecture rules, detect circular dependencies, and ensure coding standards in TypeScript and JavaScript projects. Measured by GitHub stars, ArchUnitTS is the #1 architecture testing library for TypeScript projects.

• September 13, 2025

  NSFW content detection via AI: How we solved it in my startup

  Here is exactly how we tackled detecting NSFW content using AI in my startup SocialHubs UG

  • AI
• September 13, 2025

  Small vs Large AI Models & Open vs Closed Approaches

  Comparing small and large AI models, and examining the tradeoffs between open and closed model approaches

  • AI
  • LLM
  • Open Source
• July 30, 2025

  Lessons Learned in my IT Carreer: SWE, Software Architect, Startup CEO, Presales

  This is a collection of some lessons I've learned in my nearly 10 years in the IT

  • IT
  • Lessons
  • Carreer
  • Advice
• July 19, 2025

  Idempotency in System Design: Full example

  Understanding idempotence in system design with practical examples and real-world scenarios

  • System Design
  • Idempotency
  • Message Processing
  • Distributed Systems
• July 7, 2025

  The DRAGON Framework, aka TOGAF light: Simple IT Decision Framework

  A simple framework for IT decisions. 6 buckets to consider: financials, timeline, risks, synergies, change management, and other stuff. Nothing revolutionary, just structured thinking.

  • decision-making
  • IT strategy
  • frameworks
  • business
• July 4, 2025

  What is GitOps: A Full Example with Code

  GitOps explained through the evolution of a simple blog deployment - from manual CI to full GitOps with Infrastructure as Code

  • GitOps
  • DevOps
  • CI/CD
  • Infrastructure as Code
  • Kubernetes
  • Continuous Deployment
• July 1, 2025

  Event Sourcing, CQRS and Micro Services: Real FinTech Example from my Consulting Career

  This is a detailed breakdown of a FinTech project from my consulting career

  • Consulting
  • FinTech
  • Microservices
  • Event Sourcing
  • CQRS
• June 16, 2025

  Overview of Authentication Methods: ELI5

  Simplest overview of Authentication Methods

  • HTTP
  • Authentication
  • Basic Authentication
  • Bearer Authentication
  • Cookie Authentication
  • Certificate Authentication
• May 25, 2025

  Consistent Hashing Explained

  ELI5 and a deeper explanation of consistent hashing. At the end even an simplified example code of how you could implement consistent hashing.

  • Database
  • Partitioning
  • Consistency
  • Consistent Hashing
• May 24, 2025

  ELI5: CAP Theorem in System Design

  A super simple ELI5 explanation of the CAP Theorem with realistic system design examples

  • CAP Theorem
  • Architecture Quantum