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@koushik03

Koushik Karmakar

@koushik03

Full-Stack MERN Developer

Kolkata, West BengalJoined December 2025

About

React, Node, Express, Fastify | PostgreSQL, MySQL, MongoDB | REST API, Git | HTML, CSS, PHP, JavaScript | Bootstrap, TailwindCSS

Available for

Nothing here yet.

Koushik Karmakar's blogs

DNS Work Processdnsworkprocess.hashnode.dev1 post

Hardware Networking Systemhardware-networking-system.hashnode.dev1 post

DNS Recordsdns-records-by-koushik.hashnode.dev1 post

cURL for Beginnerscurl-for-beginners-by-koushik.hashnode.dev1 post

Why Version Control Existswhy-version-control-exists-by-koushik.hashnode.dev1 post

About

React, Node, Express, Fastify | PostgreSQL, MySQL, MongoDB | REST API, Git | HTML, CSS, PHP, JavaScript | Bootstrap, TailwindCSS

Available for

Nothing here yet.

Koushik Karmakar's blogs

DNS Work Processdnsworkprocess.hashnode.dev1 post

Hardware Networking Systemhardware-networking-system.hashnode.dev1 post

DNS Recordsdns-records-by-koushik.hashnode.dev1 post

cURL for Beginnerscurl-for-beginners-by-koushik.hashnode.dev1 post

Why Version Control Existswhy-version-control-exists-by-koushik.hashnode.dev1 post

Articles Threads Comments

Recently published

emmet-for-html-by-koushik.hashnode.dev

Emmet for HTML: A Beginner’s Guide to Writing Faster Markup

When ever you go for create any HTML page and start to write, you see you write the hole structure like this: <div> <h1></h1> <p></p> </div> But ever thought about any shortcut to complete this structure with write full code. Ask a question “Why...

Feb 1·3 min read

css-selectors-by-koushik.hashnode.dev

CSS Selectors 101: Targeting Elements with Precision

1. Why CSS Selectors Are Needed Imagine you walk into an office and shout: “Everyone change your shirt color!” That’s what CSS would be like without selectors—pure chaos. CSS selectors exist so you can be precise:a) Style all paragraphsb) Style onl...

Feb 1·4 min read

html-tags-and-elements-by-koushik.hashnode.dev

Understanding HTML Tags and Elements and their attributes

HTML (Hyper Text Markup Language) is the foundation & architecture of web development. It is the language used to create the structure of web pages, which allows browsers to interpret and display content. At the core of HTML are elements and attribut...

Feb 1·5 min read

browser-internals-by-koushik.hashnode.dev

How a Browser Works: A Beginner-Friendly Guide to Browser Internals

Everyone thinks browser just show you website after searching urls but in behind, a browser is doing a LOT of work like networking, parsing, calculating, painting, rendering and all in milliseconds. Let’s break it down visually, step by step, and sto...

Feb 1·3 min read

how-tcp-work-3-way-handshake-by-koushik.hashnode.dev

TCP Working: 3-Way Handshake & Reliable Communication

Let’s understand how TCP works behind every successful data transfer like every time you search for a website or send an email, or log in to any app, your data moves across the internet one server to another.But that data doesn’t travel randomly. It ...

Jan 31·3 min read