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What is Clustering in Node.js

Theory

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What is Clustering in Node.js

Clustering (what is node js) is a Node.js topic. In plain words you use it for use all CPU cores in production box. Don’t start with a slogan — start with that picture.

Smallest example: cluster.fork or PM2. Type it, run it, and say what you see. If you can do that from memory, you know Clustering (what is node js).

From the example next to this theory — What is Clustering in Node.

Trap — in-memory session without sticky. Fix that before you talk about advanced Node.js.

Viva — what is Clustering (what is node js)? Then show cluster.fork or PM2. Then name the trap.

Exam tip

What is Clustering (what is node js)? Show this: cluster.fork or PM2. Trap: in-memory session without sticky.

Example

// What is Clustering in Node.js
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

What is Clustering in Node.js: find user 2, then list names. Say both prints.

Short notes

DefClustering (what is node js) — use all CPU cores in production box.
Rulecluster.fork or PM2
Trapin-memory session without sticky
Useproduction box

// What is Clustering in Node.js const users = [ { id: 1, name: "Asha" }, { id: 2, name: "Ravi" }, ]; function findUser(id) { return users.find((u) => u.id === id) ?? null; } console.log(findUser(2)); console.log(users.map((u) => u.name));

What is Clustering in Node.js

Example

Short notes

Questions

What is Clustering in Node.js

Example

Short notes

Questions