freecodecamp.org

228 articles in the TruthFoundry index. Each links out to the original.

• Build and Train a 25M Parameter LLM on Your CPU · A free tutorial teaches building and training a 25-million parameter language model on a standard CPU.
• Testing Docker Sandboxes for Autonomous Claude Code Execution · A hands-on test reveals how Docker Sandboxes isolate Claude Code's file editing and network access capabilities.
• Engineering Deep Dive into API Authentication Mechanisms and Failure Modes · An engineering analysis of API authentication methods, their failure modes, and organizational standards.
• Tutorial: How to Break the AI Coding Agent Fix Loop · A five-step sequence to stop, revert, restate, isolate, and verify when AI coding agents enter a fix loop.
• NestJS Observe: A Framework-Aware Observability Handbook for Developers · NestJS Observe provides framework-aware observability by leveraging NestJS internal knowledge to improve application tracing.
• AI Shifts Email Deliverability Focus to Context and Sender Reputation · AI-powered spam filters now prioritize contextual analysis and dynamic reputation over static authentication rules.
• Engineering Fixes for OWASP API Security Top 10 Vulnerabilities · An engineer explains how architectural decisions create common API vulnerabilities and how to fix them.
• Prevent JNI Crashes by Correctly Managing Local and Global References · Developers must manage JNI reference lifecycles to avoid crashes caused by leaks and thread misuse.
• Tutorial: Submitting Quarterly Updates to HMRC's Making Tax Digital API · A technical guide on using Node.js to submit cumulative income summaries to HMRC via the Making Tax Digital API.
• Separating Operational Intent from Execution in Software Architecture · The article proposes separating operational specifications from execution mechanisms to enable executor independence.
• freeCodeCamp Releases Comprehensive Free Kotlin Programming Course · freeCodeCamp.org launched a free 10-hour Kotlin course covering modern Android and backend development.
• Build an AI Support System to Auto-Route Bugs to GitHub with Next.js · Developer Andrew Baisden shares how to build IssueRelay, an AI-assisted system routing bug reports to GitHub.
• Build Your Own Lovable-Style AI App Builder with Next.js and AWS · Tutorial explains building an AI app builder using Next.js, AWS sandboxes, and agent loops.
• ChartCN Generator Simplifies shadcn Charts in Next.js · ChartCN is a free tool that generates shadcn-compatible Recharts components to save boilerplate.
• freeCodeCamp Tutorial: Build Instagram-Style App with AI · A freeCodeCamp tutorial teaches developers to build and publish a full-stack social media app using AI tools.
• Android Wake Lock Leaks Drain Battery: Common Bugs and Fixes · Android developers must prevent wake lock leaks caused by control flow errors to avoid battery drain and Play Console warnings.
• Hands-On Lab: Debugging Stuck Kubernetes Rollouts · A practical guide to diagnosing Kubernetes rollout failures using a disposable lab environment.
• Beginner's Guide to Node.js and Express.js for Web Development · This handbook teaches beginners how to build web applications using Node.js and Express.js.
• Fixing Clinical Data Pipelines Is Key to Successful Healthcare AI · Healthcare AI fails without fixing messy, inconsistent clinical data pipelines before model development.
• Screenless Wearables: Do They Improve Health Data Accuracy? · Experts debate if removing screens from wearables improves data accuracy or just reduces distraction.
• CSS content-visibility reduces rendering time by 52% in tests · A test with 150 cards shows CSS content-visibility: auto cuts rendering activity by roughly half.
• Build a Real-Time Word Counter Tool with HTML, CSS, and JavaScript · A tutorial guides users to build a client-side word counter using vanilla HTML, CSS, and JavaScript.
• Diagnosing and Fixing AI Inference Latency on Kubernetes · This guide explains hidden AI inference latency failures in Kubernetes deployments.
• freeCodeCamp releases Python algorithmic trading system course · freeCodeCamp published a 2-hour Python algorithmic trading video course.
• Build AI Resume Screening Tool with Next.js, Supabase and TypeSafe Jev · Tutorial demonstrates building an AI resume triage tool for engineering hiring teams.
• Guide to Governing AI-Generated Infrastructure With Policy as Code and OPA · Technical handbook teaches securing AI infrastructure code using Policy as Code and OPA.
• Software Automation Needs Separate Intent And Execution Layers · Analysis argues automation requires an explicit intent layer between users and execution systems.
• Technical Writer Portfolio Must Demonstrate Developer Education Skills in AI Era · A technical writer's portfolio must prove they can build and test code, not just write documentation.
• freeCodeCamp releases documentary on SeaHack 24-hour AI startup hackathon · freeCodeCamp published a documentary covering the SeaHack AI hackathon held in Hong Kong.
• Executable Operational Specifications Enable Verifiable Software Automation · Executable operational specifications separate automation intent from execution logic for verifiable systems.