Node.js · Theory

Redis Module

Theory

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Don’t start Redis Module with jargon. Start with install express. That is the whole point.

Do Redis Module once by hand. npm init + npm i express. Change one input. Say the new result out loud.

Without Redis Module, a new folder gets messy and install express is hard to trust.

Use Redis Module when install express must stay clear. If a simpler Node.js step works, use that instead.

Don’t do this with Redis Module — deleting package-lock blindly. Interviewers spot it in ten seconds.

Redis Module is not a lonely heading. Neha ties it to install express.

One breath for Redis Module, then install express, then deleting package-lock blindly. Sit down.

Exam tip

Board: install express. Dry-run Redis Module. Name the 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.