Mar 11 · 37 min read · Whether you're building your first API or prepping for a senior backend interview, auth is the topic you can't afford to hand-wave. This guide covers everything — history, sessions, JWTs, cookies, MFA
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Mar 11 · 3 min read · For most people, cookies are nothing more than a small banner at the bottom of a website asking them to “Accept All.” We click it without thinking, the message disappears, and we continue browsing. But that small pop-up represents something much bigg...
Join discussionFeb 4 · 5 min read · A Backend Engineer’s Deep-Dive When people say: “Authentication is confusing” What they usually mean is: 👉 Cookies, headers, sessions, tokens, browser behavior — all mixed together. This article clears that confusion from the ground up. 🌐 First:...
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Jan 15 · 7 min read · আমরা যেকোনো ওয়েবসাইটে সাধারণত ইমেল ও পাসওয়ার্ড দিয়ে প্রথমে লগইন করি। এরপর ওয়েবসাইট ব্রাউজ করি, ব্রাউজার বন্ধ করি, এমনকি কম্পিউটারও বন্ধ করে দিই। পরে আবার সেই ওয়েবসাইটে প্রবেশ করলে একটু খেয়াল করলেই দেখা যায়—অনেক ক্ষেত্রেই আমাদের আর নতুন করে ইমেল ও পাস...
Join discussionJan 10 · 2 min read · Today I learned about HTTP and HTTPS in detail and how web communication works between a client and a server. I started with understanding what HTTP and HTTPS are. HTTP is the protocol used to transfer data on the web, while HTTPS is the secure versi...
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Jan 10 · 8 min read · ✅ Cookies vs Local Storage vs Session Storage - Deep Dive 🍪 Cookies StorageCookies have a strict limit in terms of storage; around 4KB, which makes them suitable for small but critical pieces of data. One of the most powerful aspects of cookies is t...
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Jan 8 · 4 min read · When deploying a Laravel API with a frontend like NextJS on a server like nginx, one of the most confusing errors you can encounter is: 400 Bad Request Request Header Or Cookie Too Large What makes this error frustrating is that Laravel never rece...
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Dec 31, 2025 · 9 min read · Have you ever logged into your favorite website, closed it, and then returned to find yourself still logged in? Or maybe you’ve noticed that some websites remember your preferences (like theme or language) every time you visit? It’s all because of we...
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Dec 26, 2025 · 5 min read · Introduction When building a modern React application, one of the most critical decisions you’ll make is how to handle user authentication. The most common debate? Where to store your authentication tokens: LocalStorage or HTTP-only cookies? After ye...
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Dec 23, 2025 · 3 min read · Modern web applications need to store data in the browser. Examples: user preferences authentication state theme settings cart items JavaScript provides multiple ways to store data on the client side. In this article, you’ll learn: what browse...
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