1. How to Migrate an Application from AWS to GKE [Full Book] This guided lab walks you through migrating a small payments app, with a React UI and Express API running on a single AWS EC2 instance, while PostgreSQL stays on AWS. You’ll move t 10/16 23:40 ♡
2. Agentic AI Reliability: Build a Testing Harness for Tool Use, Guardrails, Loops, & Workflow Outcomes [Full Book] A good final answer doesn't prove that an agentic AI workflow was correct. This book develops a code-backed method for verifying execution and business outcomes from authoritative 10/16 23:15 ♡
3. T The Anatomy of an AI Data Center 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 You 10/16 19:56 ♡
4. L Learn How to Design Software Systems Like a Senior Engineer in Our New Course 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 archite 10/16 19:34 ♡
5. How to Build Ephemeral PR Preview Environments on GKE with GitHub Actions, Ingress, and Automatic TLS 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. O 10/15 21:35 ♡
6. H How to Give an AI Agent Safe Access to an Internal API with MCP 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 devel 10/15 13:02 ♡
7. S Secure by Design: How to Engineer Security into Architecture Before Writing Any Code 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 penet 10/15 13:00 ♡
8. How to Build Disaster Simulations on a Real Map: Animated Canvas Layers and Collapsing 3D Buildings with Mapbox GL JS and Three.js 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 s 10/15 12:40 ♡
9. How to Stop an AI Agent from Inventing Nigerian Postcodes 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 th 10/14 23:32 ♡
10. H How to Keep a File for Minutes, Not Years, on Cloud Run 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 10/14 12:08 ♡
