Learn How to Deploy, Secure, and Automate Full-Stack Web Apps
Beau Carnes |
Taking a web application from local development to a live, secure production environment can be daunting if you've never looked under the hood. We just published a comprehensive course on the freeCode... read more
How to Write a Linux Kernel Module That Actually Builds
Chris Roy |
A Linux kernel module is a small piece of code that can be loaded into the running kernel without rebuilding the entire kernel. That sounds simple enough, but even a minimal module produces a surprisi... read more
The 7 Essential Parts of Your Online Presence
Manish Shivanandhan |
Your online presence often gives potential employers, clients, partners, and recruiters their first impression of you. It's likely what they see before they ever meet you. They search your name, read... read more
How to Build an Endpoint Data Loss Prevention Strategy for Your Development Team
Alex Tray |
A developer's laptop holds more sensitive data than most people realize: API keys, database credentials, staging environment secrets, and sometimes entire copies of production data pulled down "just f... read more
What's New in macOS 27 for Developers?
Daniel Kehoe |
macOS 27 Golden Gate is here. Apple released it September 14, 2026, as a free upgrade for every Mac that can run it. I'll show you what actually changes for developers in macOS 27, how to upgrade with... read more
How WebRTC Scales: Signaling, NAT Traversal, and the Mesh/SFU/MCU Tradeoff
Karan Pratap Singh |
Web Real-Time Communication (or WebRTC) is the open standard browsers use to send audio, video, and data straight to each other. There's no plugin or native app, nothing beyond an API that every brows... read more
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