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Rohan Pal (@blog-rohan) | Hashnode

@blog-rohan

Rohan Pal

@blog-rohan

Joined January 2026

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Rohan Pal's blogs

Understanding Network Devices End to Endunderstanding-network-devices-end-to-end.hashnode.dev1 post

How DNS Resolution Works by Rohanhow-dns-resolution-works-by-rohan.hashnode.dev1 post

Types of DNS recordtypes-of-dns-record.hashnode.dev1 post

TCP VS UDP Understandingtcp-vs-udp-understanding.hashnode.dev1 post

Three_Way_Handshake_TCPthreewayhandshaketcp.hashnode.dev1 post

About

Nothing here yet.

Available for

Nothing here yet.

Rohan Pal's blogs

Understanding Network Devices End to Endunderstanding-network-devices-end-to-end.hashnode.dev1 post

How DNS Resolution Works by Rohanhow-dns-resolution-works-by-rohan.hashnode.dev1 post

Types of DNS recordtypes-of-dns-record.hashnode.dev1 post

TCP VS UDP Understandingtcp-vs-udp-understanding.hashnode.dev1 post

Three_Way_Handshake_TCPthreewayhandshaketcp.hashnode.dev1 post

Articles Threads Comments

Recently published

RPRohan Palinasync-understanding-files.hashnode.dev

Async Code in Node.js: Callbacks and Promises

22h ago · 2 min read · Basically nodejs is asynchronous by nature ? because its built on single threaded non blocking architecture . 1. why async code exists in nodejs ? Imagine you are reading large file system you are wri

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RPRohan Palinsessions-jwt-cookies-clarity.hashnode.dev

Sessions vs JWT vs Cookies: Understanding Authentication Approaches

22h ago · 3 min read · Authentication is the backbone of any web application , whether you are building a simple login system or you are building a full scale product you need to decide which type of authentication you will

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RPRohan Palinfile-handling.hashnode.dev

File Handling

Apr 15 · 2 min read · ye output hai disk storage ke baad and extension extension laya gya hai ese : Tu file upload kar raha hai.Ab soch: 👉 Agar user photo.png upload kare👉 Aur tu filename bana de: file-12345 ❌ Proble

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RPRohan Palinaynsc-function-clarity.hashnode.dev

Async function Clarity My refernce

Mar 22 · 1 min read · Here’s a simple basic async function in JavaScript: async function myFunction() { return "Hello, Async!"; } And how to use it: myFunction().then((result) => { console.log(result); }); ok means i

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RPRohan Palinserialization-deserialization-web.hashnode.dev

🚀 Why JSON Serialization & Deserialization Matter in Web

Mar 21 · 3 min read · 🔹 First — What are they? Serialization → Convert JS Object ➜ JSON string Deserialization → JSON string ➜ JS Object const user = { name: "Rohan", age: 22 }; // Serialization const json = JSON.str

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