Sharding, Replication and System Design Week 51.1 Cohort 3.0 Stateless vs Stateful Backend Stateless backend Each request is independent. The server does not keep client session state between requests. Any server instance can handle any request if it has accessMay 26, 2026·18 min read
Step-by-Step Tutorial: Redis and Express IntegrationRedis is an open-source, in-memory data store used by millions of developers worldwide. It is known for its speed and efficiency, making it a popular choice for caching, real-time applications, and message brokering. Redis supports various data struc...Feb 15, 2026·8 min read
How to Integrate Razorpay Payments into Your MERN ProjectIf you are building a web application that requires online payments—such as course selling, appointment booking, SaaS billing, or e-commerce—Razorpay is one of the most reliable payment gateways available in India. This article explains how to integr...Nov 30, 2025·4 min read
Building a Multi-Tenant SaaS With Automatic Subdomains Using MERN Stack (2025 Guide)Modern SaaS applications—LMS platforms, CRM tools, appointment management systems—often need multi-tenant architecture. A powerful (and popular) approach is subdomain-based multi-tenancy, where each business gets: businessname.yourapp.com Example fo...Nov 30, 2025·4 min read
MERN Google Auth✅ 1. Google Cloud Setup Create OAuth 2.0 Credentials: Go to: Google Cloud Console – Credentials Click Create Credentials → OAuth Client ID Application type: Web application ✅ 2. Frontend Setup (@react-oauth/google) 📦 Install: npm install @react...Nov 1, 2025·2 min read
Build Your App with Capacitor JS: A Comprehensive Guide1. Introduction Capacitor JS allows you to convert any web app (like Next.js) into a native Android or iOS app — without rewriting your frontend.It wraps your app inside a native WebView and lets you access mobile features like Camera, Storage, Push ...Oct 30, 2025·5 min read
Nextjs Meta Configuration Codeexport const metadata = { metadataBase: new URL("https://www.adityakumargupta.dev"), // change to your domain title: { default: "Aditya Kumar Gupta | Web Developer & AI Innovator", template: "%s | Aditya Kumar Gupta", }, description: ...Oct 25, 2025·2 min read
