Web-Development

Understanding CORS 🌐 Understanding CORS, Same-Origin Policy, and How to Handle It in Dev & Production Every web developer has at some point seen the dreaded red error: “Access to fetch at ‘http://localhost:8081’ from origin ‘http://localhost:5173’ has been blocked by CORS policy…” Let’s unpack why this happens, why the browser enforces it, and how to handle it cleanly in both development and production. 🧩 What Is an Origin? An origin is defined as the combination of: ...

Why We Need Multiple HTTP Methods: Beyond POST While it’s tempting to use POST for everything in web development, the existence of multiple HTTP methods serves crucial purposes. Here’s why we need methods like GET alongside POST: Semantic Clarity: Different methods convey different intents. GET retrieves data, POST submits it. Safety and Idempotency: GET requests are safe and idempotent, unlike POST requests which may change server state. Caching: GET requests are easily cacheable, boosting performance for frequently accessed resources. User-Friendly URLs: GET requests can be bookmarked and shared easily, as parameters are in the URL. Security Considerations: POST sends data in the request body, offering slightly more security for sensitive information. Data Size Handling: GET has URL length limitations, while POST can handle larger data in the request body. RESTful API Design: Different HTTP methods map neatly to CRUD operations in RESTful architectures. Protocol Compliance: Using appropriate methods adheres to web standards, improving interoperability. While using POST for everything is possible, it sacrifices these benefits and goes against established web conventions. Embracing the full spectrum of HTTP methods leads to cleaner, more intuitive, and standards-compliant web applications and APIs.