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Harsh Chandra Srivastava

@harshdotexe

Joined December 2025

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Harsh Chandra Srivastava's blogs

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Sessions vs JWT vs Cookies: Understanding Authentication Approaches

46m ago · 4 min read · When building authentication systems, you’ll encounter three common terms: sessions, cookies, and JWT (JSON Web Tokens). They are related but not interchangeable. This guide clarifies what each one do

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JWT Authentication in Node.js Explained Simply

49m ago · 4 min read · When you build applications with user accounts, one fundamental question always comes up: “Aap kaun ho?” (Who are you?) That’s exactly what authentication answers. Why Authentication Is Required Wi

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Storing Uploaded Files and Serving Them in Express

55m ago · 5 min read · Handling file uploads is a common backend requirement—profile pictures, documents, media, etc. In Express, this involves receiving files, storing them properly, and serving them back via URLs. Let’s b

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URL Parameters vs Query Strings in Express.js

1h ago · 3 min read · When building APIs with Express, you’ll frequently pass data through the URL. There are two primary ways to do this: URL parameters (route params) and query strings. They serve different purposes and

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How Node.js Handles Multiple Requests with a Single Thread

1h ago · 4 min read · At first glance, Node.js seems limited because it is single-threaded. But in practice, it can handle thousands of concurrent requests efficiently. The key lies in how it manages work using the event l

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Harsh Chandra Srivastava

About

Available for

Harsh Chandra Srivastava's blogs

Recently published

Sessions vs JWT vs Cookies: Understanding Authentication Approaches

JWT Authentication in Node.js Explained Simply

Storing Uploaded Files and Serving Them in Express

URL Parameters vs Query Strings in Express.js

How Node.js Handles Multiple Requests with a Single Thread

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Harsh Chandra Srivastava

About

Available for

Harsh Chandra Srivastava's blogs

Recently published

Sessions vs JWT vs Cookies: Understanding Authentication Approaches

JWT Authentication in Node.js Explained Simply

Storing Uploaded Files and Serving Them in Express

URL Parameters vs Query Strings in Express.js

How Node.js Handles Multiple Requests with a Single Thread