freeCodeCamp

State management is one of the most important aspects of building scalable and efficient React applications. Whether you're managing user interactions, API data, or application-wide settings, having a robust tool for handling state can save time and ...... read more

Mobile apps are essential tools in daily life, making accessibility a top priority. However, many apps still do not provide inclusive experiences for people with disabilities. This article highlights nine common accessibility challenges in mobile app...... read more

Feature flagging has changed the paradigm of how backend developers can test and modify the things they build. With feature flags, we can enable and disable a feature or change the functionality of something on the fly with a single click (no need to...... read more

As a developer for over 20 years, I've seen firsthand how choosing the right framework can make or break a project. The term "framework" has become so broad that it's often misunderstood. Let's clear up the confusion and help you make better technica...... read more

In this tutorial, we'll build a scalable URL shortening service using Node.js and Redis. This service will leverage distributed caching to handle high traffic efficiently, reduce latency, and scale seamlessly. We'll explore key concepts such as consi...... read more

In this comprehensive guide, you’ll build a distributed rate limiter using Redis and Lua scripting to control user requests in a high-traffic environment. Rate limiting is crucial in any system to prevent abuse, manage traffic, and protect your resou...... read more

We all come across memes almost every day on the internet. Whether you're scrolling through social media or chatting with friends, there's a good chance you'll stumble on a meme, or even share one yourself. A meme can be an image, a video, or gif tha...... read more

Zigbee2MQTT is an open-source tool that lets you manage all of your Zigbee devices locally, so you don’t need cloud services or multiple proprietary hubs. This gives you more control and flexibility, whether used on its own or integrated with platfor...... read more

In modern system design, Event-Driven Architecture (EDA) focuses on creating, detecting, using, and responding to events within a system. Events are significant occurrences that can affect a system’s hardware or software, such as user actions, state ...... read more

Knowing how your code performs is a crucial part of development. We strive to write the most optimal and performant code whilst keeping readability. In this article, I will show you how to test the performance of your code, benchmark your code, and i...... read more