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Browse thousands of programming tutorials written by experts. Learn Web Development, Data Science, DevOps, Security, and get developer career advice.
Site URL: www.freecodecamp.org/news
Feed URL: www.freecodecamp.org/news/rss
Posts: 29
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How to Make Your GitHub Profile Stand Out
https://www.freecodecamp.org/news/how-to-make-your-github-profile-stand-out/
Published: April 18, 2026 00:15
If you have a Github profile, you might overlook the many ways you can customize it – and that's completely understandable. After all, at its core, GitHub is a home for your code. But beyond repositor
How to Use Context Hub (chub) to Build a Companion Relevance Engine
https://www.freecodecamp.org/news/how-to-use-context-hub-chub-to-build-a-companion-relevance-engine/
Published: April 17, 2026 20:36
Large language models can write code quickly, but they still misremember APIs, miss version-specific details, and forget what they learned at the end of a session. That is the problem Context Hub is t
Why Chrome OS Is the Operating System the AI Era Was Built For
https://www.freecodecamp.org/news/why-chrome-os-is-the-ai-os/
Published: April 17, 2026 18:05
Chrome OS runs on a read-only filesystem. You can't install executables on the host. There's no traditional desktop environment. Everything that interacts with the underlying system does so through a
How to Build Microservices-Based REST APIs for Healthcare Portals
https://www.freecodecamp.org/news/how-to-build-microservices-based-rest-apis-for-healthcare-portals/
Published: April 17, 2026 16:30
Microservices architecture enables healthcare portals to scale, secure sensitive data, and evolve rapidly. Using ASP.NET 10 and C#, you can build independent REST APIs for services like patients, appo
How to friction-max your learning with software engineer Jessica Rose [Podcast #216]
Published: April 17, 2026 11:00
Today Quincy Larson interviews Jessica Rose. She's a dev and teacher who's worked on open data projects at Mozilla and lots of open source projects. We talk about: How the whole world is hard, and ho
Shadow AI Explained: Why Employees Are Using AI Behind Your Back
https://www.freecodecamp.org/news/shadow-ai-explained-why-employees-are-using-ai-behind-your-back/
Published: April 16, 2026 22:10
A quiet shift is happening inside modern companies. It's not visible in dashboards. It's not tracked in logs. It's not approved by IT or security teams. Yet it's everywhere. Employees are using AI too
Traditional Scraping vs AI Scraping: A Practical Guide for Developers and Data Teams
https://www.freecodecamp.org/news/traditional-scraping-vs-ai-scraping/
Published: April 16, 2026 21:37
Enormous amounts of data are constantly generated on the open web. Product prices change, job listings go live and get taken down, news articles are published, and company information gets updated. Fo
How Database Indexes Work – A Practical Guide with PostgreSQL Examples
Published: April 16, 2026 17:27
Every developer eventually runs into a slow query. The table has grown from a few hundred rows to a few million, and what used to take milliseconds now takes seconds — or worse. The fix, more often th
How to Streamline Search in Web Applications with Elasticsearch
https://www.freecodecamp.org/news/streamline-search-functionality-in-web-apps-with-elasticsearch/
Published: April 16, 2026 16:25
They say data is the new gold. But navigating through a large dataset to meet the demands of consumers in record time still gives backend devs a headache. Conventional database queries often aren't to
How to Build an Open Source Data Lake for Batch Ingestion
https://www.freecodecamp.org/news/how-to-build-an-open-source-data-lake-for-batch-ingestion/
Published: April 16, 2026 14:26
Creating a data platform has been made easier by cloud data analytics platforms like Databricks, Snowflake, and BigQuery. They offer excellent ramp-up and scaling options for small to mid-size teams.
OpenAI Codex Essentials – AI Assisted Agentic Development Course
https://www.freecodecamp.org/news/openai-codex-essentials-ai-assisted-agentic-development-course/
Published: April 16, 2026 13:25
OpenAI Codex is a specialized artificial intelligence system designed to translate natural language into code. We just published a course on the freeCodeCamp.org YouTube channel that will teach you ho
Learn Software System Design
https://www.freecodecamp.org/news/learn-software-system-design/
Published: April 16, 2026 13:19
Level up your system design skills! We just published a course on the freeCodeCamp.org YouTube channel that progresses from foundational concepts to production-ready systems, covering databases, scali
How to Generate PDF Files in the Browser Using JavaScript (With a Real Invoice Example)
https://www.freecodecamp.org/news/how-to-generate-pdf-files-in-the-browser-using-javascript/
Published: April 15, 2026 18:29
Generating PDF files is something most developers eventually need to do. Whether it’s invoices, reports, or downloadable documents, PDFs are still one of the most widely used formats. The usual approa
How to Get Started with Terraform
https://www.freecodecamp.org/news/how-to-get-started-with-terraform/
Published: April 15, 2026 16:25
Infrastructure has undergone a fundamental shift over the past decade. What was once configured manually through dashboards and shell access is now defined declaratively in code. This shift isn't just
Service-to-Service Communication: When to Use REST, gRPC, and Event-Driven Messaging
Published: April 14, 2026 20:37
The communication layer is one of the few architectural decisions that touches everything in your apps. It determines your latency floor, how independently teams can deploy, how failures propagate, an
A Developer’s Guide to Lazy Loading in React and Next.js
https://www.freecodecamp.org/news/a-developers-guide-to-lazy-loading-in-react-and-nextjs/
Published: April 14, 2026 20:31
Large JavaScript bundles can slow down your application. When too much code loads at once, users wait longer for the first paint and pages feel less responsive. Search engines may also rank slower sit
The Data Quality Handbook: Data Errors, the Developer's Role, and Validation Layers Explained.
Published: April 14, 2026 20:29
In August 2012, Knight Capital, a major trading firm in the United States, deployed faulty trading software to its production system. The system used this incorrect configuration data and it triggered
United States Residential Proxy: Why Local IP Accuracy Matters for SERP, Ads, and Pricing
Published: April 14, 2026 18:19
In 2026, the concept of “location” on the internet has evolved from a broad regional signal into a hyper-specific, neighbourhood-level determinant of what users see. Search engines, advertising platfo
How to Build a Fashion App That Helps You Organize Your Wardrobe
https://www.freecodecamp.org/news/how-to-build-a-fashion-app-to-organize-your-wardrobe/
Published: April 14, 2026 16:26
I used to spend too long deciding what to wear, even when my closet was full. That frustration made the problem feel very clear to me: it was not about having fewer clothes. It was about having better
How to Build an Admin Dashboard Sidebar with shadcn/ui and Base UI
https://www.freecodecamp.org/news/build-an-admin-dashboard-sidebar-with-shadcn-ui-and-base-ui/
Published: April 14, 2026 16:25
Admin dashboards are one of the most common real-world UI components you will build as a React developer. At the heart of nearly every dashboard is a sidebar, a persistent navigation panel that organi
The AI Governance Handbook: How to Build Responsible AI Systems That Actually Ship
https://www.freecodecamp.org/news/the-ai-governance-handbook-build-responsible-ai-systems/
Published: April 13, 2026 23:13
In February 2024, a Canadian tribunal ruled that Air Canada was liable for its chatbot's fabricated bereavement policy. The airline argued the chatbot was "a separate legal entity," but the tribunal d
How to Build a Local DevOps HomeLab with Docker, Kubernetes, and Ansible
Published: April 13, 2026 21:56
The first time I tried to follow a DevOps tutorial, it told me to sign up for AWS. I did. I spun up an EC2 instance, followed along for an hour, and then forgot to shut it down. A week later I had a $
How to Use Mixins in Flutter [Full Handbook]
https://www.freecodecamp.org/news/how-to-use-mixins-in-flutter-full-handbook/
Published: April 13, 2026 21:53
There's a moment in every Flutter developer's journey where the inheritance model starts to crack. You have a StatefulWidget for a screen that plays animations. You write the animation logic carefully
How to Prep for Technical Interviews – A Guide for Web Developers
https://www.freecodecamp.org/news/how-to-prep-for-technical-interviews-guide-for-web-devs/
Published: April 13, 2026 17:48
Over the years I've participated in dozens of technical interviews. I've answered technical questions one-on-one with the CTO and in a group with the dev team. I've taken quizzes with a timer and buil
GPT-5.4 vs GLM-5: Is Open Source Finally Matching Proprietary AI?
https://www.freecodecamp.org/news/gpt-5-4-vs-glm-5-is-open-source-finally-matching-proprietary-ai/
Published: April 13, 2026 17:24
On March 27, 2026, Zhipu AI quietly pushed an update to their open-weight model line. GLM-5.1, they claim, now performs at 94.6% of Claude Opus 4.6 on coding benchmarks. That's a 28% improvement over
Data Visualization Tools for Svelte Developers
https://www.freecodecamp.org/news/data-visualization-tools-for-svelte-developers/
Published: April 13, 2026 17:13
Svelte is a front-end framework for building fast and interactive web applications. Unlike many other well-known frameworks, it doesn’t use a virtual DOM. Instead, it turns your code into efficient Ja
How to Keep Human Experts Visible in Your AI-Assisted Codebase
https://www.freecodecamp.org/news/how-to-keep-human-experts-visible-in-your-ai-assisted-codebase/
Published: April 13, 2026 16:24
Six months ago, Stack Overflow processed 108,563 questions in a single month. By December 2025, that number had fallen to 3,862. A 78% collapse in two years. The explanation everyone reaches for is th
Efficient Data Processing in Python: Batch vs Streaming Pipelines Explained
https://www.freecodecamp.org/news/efficient-data-processing-in-python-batch-vs-streaming-pipelines/
Published: April 13, 2026 13:51
Every data pipeline makes a fundamental choice before any code is written: does it process data in chunks on a schedule, or does it process data continuously as it arrives? This choice — batch versus
How to Build and Deploy Multi-Architecture Docker Apps on Google Cloud Using ARM Nodes (Without QEMU)
Published: April 13, 2026 13:42
If you've bought a laptop in the last few years, there's a good chance it's running an ARM processor. Apple's M-series chips put ARM on the map for developers, but the real revolution is happening ins