Full-Stack Web Development (Next.js & MERN)

• ES6+, closures, async/await, Fetch API
• React state, hooks (useState, useEffect, custom hooks)
• Tailwind CSS layout responsiveness and dark mode design systems

• Node.js/Express or Spring Boot REST standards
• PostgreSQL schema modeling, indexes, and Prisma ORM
• JWT authentication, RBAC, and rate limiting

• Next.js Server Components, Server Actions, and Caching
• Razorpay / Stripe Webhook payment integration
• Vercel, Docker containers, and GitHub Actions CI/CD

Q1: What is the difference between React Server Components (RSC) and Client Components in Next.js?

Server Components execute only on the server, producing zero client-side JavaScript bundle and allowing direct database access. Client Components render on client (and pre-render on server) to handle interactivity, state, and browser APIs.

Q2: How do you handle database connection pooling in serverless environments?

Use connection pooling proxies like Prisma Accelerate, PgBouncer, or Supabase connection pooling to avoid exhausting PostgreSQL max connection limits during serverless scaling.