The Anatomy of an AI Data Center
Beau Carnes |
Artificial intelligence models like GPT-4 and Claude require massive, highly complex physical infrastructure. We just published a new full-length course on the freeCodeCamp.org YouTube channel that ta... read more
Learn How to Design Software Systems Like a Senior Engineer in Our New Course
Beau Carnes |
System design is one of the most important skills for software engineers today. Whether you're applying for senior or staff-level positions or just looking to level up your architectural knowledge, un... read more
How to Build Ephemeral PR Preview Environments on GKE with GitHub Actions, Ingress, and Automatic TLS
Amina Lawal |
Every team that ships software eventually builds a staging environment. And every team that builds a staging environment eventually discovers the same problem. Staging is shared. One environment, many... read more
How to Give an AI Agent Safe Access to an Internal API with MCP
Harish Gaggar |
Our on-call team keeps a small internal notes API. The web app in front of it shows who's holding the pager, which days are frozen for deploys, and where the runbooks live. A developer on that team wa... read more
Secure by Design: How to Engineer Security into Architecture Before Writing Any Code
Oluwaseyi Fatunmole |
There's a conversation that happens in most engineering teams,maybe usually too late. Think of this, a feature ships to production. A security review happens afterwards, or a penetration test finds so... read more
How to Build Disaster Simulations on a Real Map: Animated Canvas Layers and Collapsing 3D Buildings with Mapbox GL JS and Three.js
Alex Oliinyk |
At some point, a map project needs more than markers and polygons. You want something to happen on the map: water moving up a street, smoke drifting with the wind, or a shockwave spreading out from a... read more
How to Stop an AI Agent from Inventing Nigerian Postcodes
Kayode Adeniyi |
On 1 October 2026, Nigeria's postcode changed from six digits to an 11-character code that identifies a single building, such as EK-01-A03-FK-01. Language models trained before that date still describ... read more
How to Keep a File for Minutes, Not Years, on Cloud Run
Abhinay Gokul |
A print job, a one-time download, or a support attachment typically only needs to exist until someone finishes with it. But most backends still store it like Google Drive: a named object, no expiry, a... read more
The State of AI and Software Engineering: Code is Cheaper but Expertise are More Valuable [Full Book]
Vahe Aslanyan |
A report on AI productivity, human capability, software economics, SaaS defensibility, and the future of engineering work. Between 2024 and 2026, the marginal cost of producing a line of working code... read more
What to Do When Your Constants Are Someone Else's Law
Javeed Shaik |
A colleague once asked me why a number in my code had a comment three lines long. The number was 18. The comment said which rule it came from, which section notified it, and that it could change witho... read more