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Express notes for developers

Master Express with a curated set of 7 developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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Express

Middleware & Request Pipeline

Express Middleware & Request Pipeline Middleware functions have access to request, response objects and the next middleware function. They execute in order and

Express

Routing & Route Handlers

Express Routing const express = require('express'); const app = express(); // Basic routes app.get('/', (req, res) => { res.send('Hello World'); }); app.post('/

Express

Interview Questions

Express Interview Questions Common Express.js questions in backend and Node.js interviews. These range from framework fundamentals to architecture decisions and

Express

Setup & Basics

Express.js Setup & Basics Express is a minimal, unopinionated web framework for Node.js. It provides a thin layer of fundamental web application features - rout

Express

Authentication & Security

Express Authentication & Security Security is not optional. Every production Express API needs authentication, input validation, rate limiting, and proper secur

Express

Middleware

Express Middleware Middleware functions are the backbone of Express. They have access to the request and response objects and the next() function. Middleware ca

Express

Routing

Express Routing Routing determines how an application responds to client requests at specific endpoints. Express provides a full-featured routing system that su

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