Web Development

How TLS 1.3 Works: Certificates, 1-RTT Handshakes, and Why 0-RTT Is Replayable

TCP can carry bytes in order. It cannot tell you who is on the other end, and it cannot stop a path observer from reading those bytes. HTTPS...

Sarthak Bystander 20 Sept, 2026

How QUIC Works: Streams, Connection IDs, and Why HTTP/3 Left TCP

TCP names a connection by four numbers: two addresses and two ports. Change any of them and the connection is gone. It also delivers one ord...

Sarthak Bystander 9 Sept, 2026

How TCP Works: Handshake, Reliability, and Congestion Control

HTTP can describe a request. DNS can find an address. Neither of those steps moves a single reliable byte across an unreliable network. That...

Sarthak Bystander 4 Sept, 2026

What Happens When You Type a URL? Step-by-Step Explained

You type a website address, press Enter, and a page appears. That moment feels instant, but it triggers a carefully coordinated sequence of ...

Sarthak Bystander 4 Sept, 2026

SQL vs NoSQL Explained: How Databases Differ

SQL vs NoSQL is one of the first architecture choices a developer makes. This guide explains how each model stores data, how queries work in...

Sarthak Bystander 2 Sept, 2026

How Caching Works: A Beginner Guide for Developers

Every time you open a website and it loads in a fraction of a second, caching is probably doing most of the work. Caching is one of the most...

Sarthak Bystander 1 Sept, 2026

How Authentication Works: Sessions, Tokens, and JWT

Every useful web application eventually asks the same question: who is this user, and what are they allowed to do? Authentication answers th...

Sarthak Bystander 31 Aug, 2026

How REST APIs Work: Architecture Explained for Beginners

Every time a mobile app loads your profile, a website fetches search results, or one service talks to another, a REST API is usually involve...

Sarthak Bystander 30 Aug, 2026

How Browsers Render Web Pages: The Critical Rendering Path

Introduction When you open a website, the browser does more than show a file. It parses markup, builds trees in memory, calculates geometry...

Sarthak Bystander 29 Aug, 2026