When building forms in React, you’ll likely decide between Controlled and Uncontrolled components. Both manage input fields—but they work in fundamentally different ways. Understanding their strengths and trade-offs helps you build predictable and performant forms. 🎯 What Are Controlled Components?…
When you type a URL in your browser and press Enter, a series of coordinated steps transform your code into the polished web page you see. This process, known as the Browser Rendering Pipeline, is critical to how quickly and…
When building React applications, you’ll frequently encounter two fundamental concepts: props and state. While they both help manage data in your components, they serve very distinct roles. Understanding the difference between props and state is essential for writing clean, maintainable…
🧠 Why the Event Loop Matters JavaScript runs on a single thread, yet it handles asynchronous tasks like timers, I/O, and UI interactions seamlessly. The magic behind this concurrency? The Event Loop. It coordinates how JavaScript schedules, queues, and executes…
When building Spring MVC or Spring Boot backend applications, handling incoming data from clients correctly is crucial. Two commonly used annotations, @RequestBody and @ModelAttribute, often cause confusion. They may seem similar, but they serve distinct purposes in request-data binding. Here’s…
When working on Spring MVC or Spring Boot applications, handling exceptions, data binding, or shared model attributes often ends up duplicated across controllers. That’s where @ControllerAdvice comes in—a powerful annotation that helps you centralize behavior across all controllers. In this…
When building web applications with Spring Boot, choosing between @Controller and @RestController is more than just a matter of syntax—it shapes how your application handles HTTP responses. I’ve navigated this decision in multiple projects, and understanding the distinction helps avoid…
Understanding Spring MVC’s internal request processing can transform how you architect controllers, filters, interceptors, and exception handling in your application. Let’s walk through the typical execution flow—complete with illustrations from real-world projects. 🧭 1. DispatcherServlet: Spring’s Front Controller Every HTTP…
When building robust Spring Boot or Spring MVC applications, you’ll often need to execute reusable logic—like logging, authentication, or compression—before or after handling HTTP requests. But should you use a Servlet Filter or a Spring Interceptor? In my experience as…
When building web applications with Spring MVC or Spring Boot, you’ve likely encountered errors bubbling up to the end user or your logs—especially unexpected ones. The @ExceptionHandler annotation exists precisely to help you handle exceptions neatly within your controllers or…