We just published a new documentary-style video on the freeCodeCamp channel that takes you behind the scenes of a high-energy 24-hour hackathon. Quincy Larson traveled to Hong Kong to serve as a judge at SeaHack. There were more than 250 developers and builders from over a dozen countries. The challenge? Team up, brainstorm, and build […]
Monthly Archives: September 2026
Modern software systems are increasingly automated. We automate deployments, infrastructure changes, scaling, incident response, and data pipelines. And now, with AI agents, we are starting to automate operational decisions too. That sounds like progress, but it creates a problem that is easy to miss: We are getting better at executing operations without necessarily getting better […]
Managing massive, rapidly growing datasets efficiently is a critical skill for modern developers. Whether you are tracking API request logs, monitoring IoT fleet telemetry, or building dashboards for AI agents, unoptimized time-series data can quickly slow standard PostgreSQL queries to a crawl. We just posted a new course on the freeCodeCamp.org YouTube channel that will […]
Are you a software engineer looking to master building production-ready AI applications and agentic workflows? We’ve just published a brand new, comprehensive course on the freeCodeCamp.org YouTube channel that will help you prepare for the Claude Certified Developer Foundations (CCDV-F) Certification. Created by Andrew Brown, this course is designed specifically for developers who want to […]
When I published my package on pub.dev, the first few days were exciting as the number of downloads climbed. 201 downloads in a few days! Then something strange happened. The number dropped: 120, then 55. That’s when I knew something wasn’t right. I didn’t break anything. Nothing changed in the package. People did not stop […]
Your workflow uses actions/checkout@v4. Today, that tag points to a vetted release. Tomorrow, a compromised maintainer or attacker moves the tag to malicious code. Your pipeline runs it with access to GITHUB_TOKEN. Third-party Actions are dependencies. A floating tag behaves like an unpinned package dependency. If the reference changes, the workflow can execute different code […]
High-resolution images look great, but they can significantly slow down page load times and consume massive amounts of storage. While backend compression tools are common, building a client-side image compressor offers a massive advantage: privacy. When you process images directly in the browser, no user data ever touches a server. In this tutorial, you’ll learn […]
Large legacy migrations often fail long before the final cutover. The failure usually starts when the migration is framed as a single event. Move the application. Move the database. Move all the users. Switch the traffic. Turn the old system off. That creates a dangerous assumption: the legacy system and the new system need to […]
Geoffrey Hinton is known as the “the Godfather of AI”. We just published a course on the freeCodeCamp.org YouTube channel that will help you master modern neural networks by recreating the groundbreaking discoveries of Geoffrey Hinton. The course covers his key papers and you will follow the evolution of the ideas across decades, from Boltzmann […]
Taking a web application from local development to a live, secure production environment can be daunting if you’ve never looked under the hood. We just published a comprehensive course on the freeCodeCamp.org YouTube channel that teaches full-stack deployment from the ground up. Developed by Imad Saddik, this course takes a hands-on approach. By doing everything […]
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