Every application that handles user data eventually hits the same problem: not all users should see the same things. A junior nurse should not be able to access every patient record in the hospital. A contractor should not be able to read internal financial reports. An employee logged in from an unrecognized device at 2AM […]
Monthly Archives: June 2026
Modern payment systems look simple from the outside. A user clicks a button, enters payment details, and money moves from one account to another. But once payments happen repeatedly rather than once, the backend becomes much more complex. Subscriptions, memberships, SaaS billing, and donation platforms all depend on repeat transactions that happen automatically over time. […]
Working with healthcare data introduces preprocessing challenges that go beyond those you might encounter with structured data. Some familiar techniques still apply, while others look very different once your data becomes medical images. In this article, you’ll learn how to prepare a real-world medical imaging dataset for machine learning, from initial data validation to a […]
We just posted a comprehensive Docker course now live on the freeCodeCamp.org YouTube channel! The ability to scale applications instantly and ship software reliably is an important skill. Containerization is at the heart of modern development. This hands-on, structured course is designed to take you from absolute scratch to becoming job-ready. Taught by instructor Eissa […]
Recently, I spent time prototyping an educational app using Claude Code. The project is an open-source mobile app for educators to share, discover, and facilitate low-cost creative learning activities. One of the core features of the app is AI-assisted activity creation. Activity creation has always been a key aspect of the project, and in the […]