freeCodeCamp

Access control is crucial for preventing unauthorized access and ensuring that only the right people can access sensitive data in your application. As your app grows in complexity, so does the challenge of enforcing permissions in a clean and efficie...... read more

Bioengineering stands at the precipice of a transformative era, where the convergence of biology, engineering, and technology promises to redefine the very fabric of human existence. This is not hyperbole. It’s a reflection of the rapid strides being...... read more

Imagine a carpenter without tools, a writer without a pen, or a chef without a knife—this is like trying to imagine a developer or sysadmin without a reliable text editor. For devs, text editors are the ultimate multitools, shaping how we create, man...... read more

Being a developer isn’t as straightforward as many people think. It’s not just about learning a programming language and typing out code to build software. There’s a lot more to it. And one of the most confusing (and often frustrating) topics for dev...... read more

Cloud Development Environments (CDEs) have become essential tools in modern software development, offering enhanced productivity and streamlined workflows. This article compares three leading CDEs: Harness CDE, Gitpod, and Coder. My goal here is to o...... read more

On this week's episode of the podcast, freeCodeCamp founder Quincy Larson interviews Rishab Kumar, cloud engineer and developer advocate at Twillio. Rishab grew up in India and moved to Canada for school. But he couldn't afford to finish. He resorted...... read more

Async programming is a programming paradigm that allows you to write code that runs asynchronously. In contrast to synchronous programming, which executes code sequentially, async programming allows code to run in the background while the rest of the...... read more

Building AI and agentic workflows is at the core of modern AI development in 2025. And LangChain has been the go-to framework for creating AI applications for a while now. But some developers are seeking alternatives that offer more flexibility, simp...... read more

Have you ever wondered how a computer knows which program’s output to display, especially when multiple programs are running simultaneously? This is possible because of the Process ID (PID). A PID is a unique identifier that helps the operating syste...... read more

APIs (Application Programming Interfaces) are the backbone of modern software applications, enabling seamless communication between different systems and services. However, this interconnectedness also makes them a prime target for cyberattacks. API ...... read more