Hapi
ELI5 — The Vibe Check
Hapi is a Node.js framework built by Walmart's engineering team because Express wasn't enterprise-y enough for them. It's like Express wearing a suit and tie — more structured, more opinionated, and obsessed with configuration over code.
Real Talk
Hapi is a rich framework for building applications and services in Node.js. It emphasizes configuration-driven design, built-in input validation, caching, authentication, and a powerful plugin system. Originally created at Walmart Labs to handle Black Friday traffic.
Show Me The Code
const Hapi = require('@hapi/hapi');
const server = Hapi.server({ port: 3000 });
server.route({ method: 'GET', path: '/', handler: () => 'Hello' });
await server.start();
When You'll Hear This
"We picked Hapi for its built-in validation and plugin system." / "Hapi's configuration-centric approach makes large APIs more manageable."
Related Terms
Express
Express is the most popular framework for building Node.js backends.
Koa
Koa is Express's slimmer, more modern sibling — made by the same team. It's lighter with better async/await support out of the box.
NestJS
NestJS is Node.js with structure. Plain Express can get messy in large projects.
Node.js
Node.js lets you run JavaScript on the server — not just in the browser. Before Node.js, JavaScript was trapped in the browser.