How to Build Type-Safe APIs with Hono and Zod
If you've shipped a Node.js API before, you already know this pain: your TypeScript types say one thing, your runtime validation says another, and your...
Chinedu Otutu - freecodecamp
Development
Design
Chain of Responsibility Design Pattern: Decoupling Complex Business Rules, One Handler at a Time
Every system, at some point, ends up with a function that nobody wants to touch. It starts small: a simple validation check, an if statement here, another...
Oluwaseyi Fatunmole - freecodecamp
Why Your Website Should Never Stop Changing
Every website peaks on launch day and slowly drifts from there, not because it breaks, but because nobody has time to keep it current. Autonomous websites, continuously optimized...
Pierre Burgy - smashingmagazine
Mobile
Mobile Background Execution: iOS Background Modes, Android WorkManager, and Background Services in Dart
Every mobile developer eventually hits the same wall: the app works perfectly when the user is looking at it. But the moment they press the home button,...
Oluwaseyi Fatunmole - freecodecamp
Other
What Happens to a Medical Image Before and After a Model Sees It
Medical imaging papers are full of familiar-looking terms: normalization, labels, validation, annotation, and preprocessing. If you come from general machine...
Lakshmi Mahabaleshwara - freecodecamp
How to Build Referral-Aware Split Payment Flows in Django
When a product has a single checkout, payment logic is usually simple: charge the user, mark the order as paid, and move on. But once the business model...
Chidozie Managwu - freecodecamp
How to Test Conversational AI: A Practical Guide for QA Engineers
When I first started learning about conversational AI testing, one question kept bothering me: Where is the expected result? Coming from traditional software...
GAYATHRI BOLINENI - freecodecamp
How to Convert Prometheus Histograms to OTLP with the OpenTelemetry Collector
Modern applications often expose metrics at a /metrics endpoint using the Prometheus format. Among these metrics, histograms are particularly useful. They...
Purity Udeh - freecodecamp
Neural Networks Explained: What They Are and How to Build One in Python
Have you ever wondered how a computer can recognize a handwritten number, predict whether an email is spam, recommend a video, or understand a sentence? A lot...
Eva J Patel - freecodecamp
How to Host Odoo: Self-Hosted vs Managed Hosting
Odoo is an open-source enterprise resource planning (ERP) platform that helps businesses manage operations such as sales, customer relationship management...
Abdul Talha - freecodecamp
How to Understand a Legacy Codebase Using AI Before Changing it
The first thing many engineers want to do when they inherit a legacy codebase is change it. And I understand the impulse. You open a class that's 1,500 lines...
Hugo Teijiz - freecodecamp