A few years ago, I had the chance to work with a Principal Software Engineer who seemed to have a superpower: they always got things done—without looking stressed. Deadlines? Met. Code quality? Excellent. Meetings? Efficient. Meanwhile, the rest of us were scrambling to keep up. So, I did what any ambitious developer would do—I paid … Read more
If you’ve been working with Node.js for a while, you know that package.json is the heart of your project. It keeps track of dependencies, scripts, metadata, and more. But despite its importance, developers often make mistakes that can lead to broken builds, security issues, or just plain confusion. Let’s go over seven common mistakes in … Read more
Node.js has become a must-know technology for developers working with JavaScript, backend services, or full-stack development. Whether you’re preparing for an interview or just sharpening your skills, knowing the most commonly asked Node.js questions can give you an edge. 1. What is Node.js? Node.js is a runtime environment that allows JavaScript to run outside the … Read more
JSON Web Tokens (JWTs) are often praised for their simplicity and scalability in stateless authentication. They allow clients to authenticate once and use the token for subsequent requests without needing to hit the database again. Sounds great, right? Well, not always. While JWTs have their place, they might not be the best choice in some … Read more
How big platforms like Twitter, Instagram, or GitHub handle username availability in real-time? When you sign up and type in your desired username, it instantly tells you whether it’s available or already taken. It looks simple, but behind the scenes, there’s a lot of engineering at play. 1. The Basics: Where Are Usernames Stored? Usernames … Read more