Node.js · Theory

Redis Module

Theory

675/723

Redis Module is a Node.js topic. In plain words you use it for install express in a new folder. Don’t start with a slogan — start with that picture.

Smallest example: npm init + npm i express. Type it, run it, and say what you see. If you can do that from memory, you know Redis Module.

From the example next to this theory — Redis Module — commonJS uses require / module.

Trap — deleting package-lock blindly. Fix that before you talk about advanced Node.js.

Viva — what is Redis Module? Then show npm init + npm i express. Then name the trap.

Exam tip

What is Redis Module? Show this: npm init + npm i express. Trap: deleting package-lock blindly.

// math.js style
function add(a, b) { return a + b; }
module.exports = { add };

const math = { add };
console.log(math.add(2, 3));

Redis Module — commonJS uses require / module.exports. ESM uses import / export.