freeCodeCamp

Product Experiment Counterfactual Methods for Estimating the Effects of AI Prompt Engineering

Rudrendu Paul |
Imagine your team deployed Prompt A globally two weeks ago. Tight deadlines and high confidence meant the rollout hit 100 percent of users without any A/B testing, shadow traffic, or holdout groups. W... read more

Multi-Agent Coding & Deployment with TRAE IDE

Beau Carnes |
Modern software engineering is evolving into an ecosystem where AI actively participates in planning, coding, and deployment. To help bridge the gap between initial concepts and fully shipped products... read more

Claude Certified Architect – Foundations: Prep for Anthropic's New Certification Exam

Beau Carnes |
Anthropic is expanding its official certification ecosystem, and advanced practitioners now have a dedicated path to validate their expertise with the release of the Claude Certified Architect – Found... read more

How an Apple Engineer Pranked Billion-Dollar Lawyers (and Won)

Beau Carnes |
What happens when an engineer gets fed up with corporate lawyers breathing down their neck? Sometimes, you get an inside joke that quietly ships to millions of machines and survives for over three dec... read more

How to Run an AI Extractability Audit on Your Site (I Found 6 Heading Tags That Cost Me Citations)

Chudi Nnorukam |
When an AI assistant answers a question, it lifts sentences from a handful of pages and cites them. Whether your page is liftable is not a mystery or a vibe. It's a set of mechanical properties of you... read more

How to Build Kubernetes Networking Without Kubernetes: Do What the CNI Does By Hand

Shubham Katara |
In this article, you'll build an accurate mental model of what a Container Network Interface (CNI) actually does. Not by reading YAML, but by doing every single step it does by hand with raw Linux ker... read more

How Programmatic Advertising Works

Manish Shivanandhan |
Most tutorials on programmatic advertising stop at the web banner. That's a shame, because the idea gets far more interesting once you follow it off the screen and into the physical world. If you've n... read more

From RPC to gRPC: Understanding Remote Procedure Calls, Protocol Buffers, and Modern Distributed Systems Communication

Oluwaseyi Fatunmole |
Every application, at some point, needs to talk to another system. A mobile app talks to a backend. A backend service talks to a payment gateway. An authentication service talks to a user service. A d... read more

What Is HyDE? How to Improve RAG with Hypothetical Documents

Sameer Shukla |
Retrieval-Augmented Generation, commonly known as RAG, has become one of the most widely used approaches for building applications with large language models. Instead of asking an LLM to answer entire... read more

How to Make a Static HTML Page Editable in the Browser with Vanilla JavaScript

timothy ogbemudia |
When you maintain a document for someone else, such as a résumé, a one-page portfolio, or a printable menu, the bottleneck is rarely the layout. It's the edit loop. Every small change ("move this bull... read more