What is the difference between app.use() and app.get()? Method Purpose

Short answer: pp.use () Middleware for all requests pp.get () Handle only GET requests 📌 pp.use(authMiddleware); // Runs on all routes pp.get('/data', handler); // Runs only for GET /data pp.use () Middleware for all requests pp.get () Handle only GET requests 📌

Example code

pp.use(authMiddleware); // Runs on all routes pp.get('/data',… handler); // Runs only for… pp.use () Middleware for all requests pp.get () Handle only GET requests 📌 Example: pp.use(authMiddleware); // Runs on all routes pp.get('/data', handler); // Runs only for GET /data pp.use () Middleware for all requests pp.get () Handle only GET requests 📌 Example: pp.use(authMiddleware); // Runs on all routes pp.get('/data',… handler); // Runs only for GET /data

Real-world example (ShopNest)

A ShopNest BFF in Node.js aggregates catalog and price APIs for the React storefront.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.