Security

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: ...

Understanding JWT Understanding JWT: A Simplified Tech Overview 🚀 Let’s break down JWT (JSON Web Token) simply and clearly, step-by-step, just like a casual tech chat! 1. What is JWT? 🤔 JWT (JSON Web Token) is a secure, compact, URL-friendly token format used for safely exchanging information between two systems. It’s commonly used for: Authentication: Confirming who you are. Authorization: Checking permissions for accessing resources. Imagine JWT as your digital ID card issued by servers to clients. ...