How to Catch Security Vulnerabilities in Code Before They Reach Your Pull Requests
Umair Mirza |
Security reviews are most effective when developers receive feedback while the code is still fresh in their minds. Waiting until a pull request, CI build, or penetration test to find exposed credentia... read more
How to Use Differential Testing During a Legacy Migration
Hugo Teijiz |
The most dangerous moment in a legacy migration isn't necessarily when you start writing the new implementation. It's when the new implementation looks finished. The code compiles, the tests pass, the... read more
How to Implement Feature Flags for Safe and Gradual Rollouts
Abisoye Alli-Balogun |
Feature flags are one of the most powerful tools in a team's deployment arsenal. They decouple deployment from release, meaning your CI/CD pipeline can push code to production servers on every merge,... read more
How to Design Gifting Features People Actually Use: Evidence from 58 Apps
Anamol Rajbhandari |
American shoppers spent about $29 billion on gift cards over the 2025 holiday season, and 43 percent of them bought at least one. This put gift cards at the top of what people said they wanted accordi... read more
How to Connect to HMRC's Making Tax Digital API: A Beginner's Guide
Solomon Amos |
If you write software for anyone who pays UK tax, sooner or later you'll need to talk to HMRC. Making Tax Digital (MTD) for Income Tax went live on 6 April 2026, and it's already mandatory for self-em... read more
How to Prevent Race Conditions in Django
Mari |
Let's say you have enough credit left to generate one more image in an AI app. You submit a request in one browser tab, then submit another in a second tab before the first finishes. The app accepts b... read more
Apple Watch’s New VO2 Max Test: How It Measures Your Cardiorespiratory Fitness
Reetain Raina |
Your Apple Watch can tell you how fast you're moving, how your heart responds to exercise, and how your workout changes over time. But one of its more interesting fitness metrics is something it can't... read more
How to Sandbox a Linux Process with Landlock, No Root Required
Chris Roy |
Here's a program restricting itself, then trying to read two files: without landlock: read /etc/hostname ok read /tmp/secret.txt ok with landlock, /etc allowed: read... read more
How to Build an AI Chat App Interface With the Vercel AI SDK and Shadcn/ui
Vaibhav Gupta |
Every other AI product you open today has the same screen: a message list, a text box at the bottom, and words that stream in one token at a time. It looks simple, but it's not simple to build well. Y... read more
How to Build a Self-Evaluating AI System: Automated Testing and Evaluation Pipelines for LLM Applications
Jude Otine |
So you shipped your AI feature and it works in demos. Your team is impressed. Then a user asks a question slightly outside your test cases and the model confidently returns something completely wrong.... read more