Node.js · Theory

child_process.execFileSync(file[, args][, options]) function in Node.js

Theory

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child_process.execFileSync(file[, args][, options]) function in Node.js

child_process.execFileSync(file[, args][, options]) function (in nod) 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 child_process.execFileSync(file[, args][, options]) function (in nod).

From the example next to this theory — child_process.

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

Viva: what is child_process.execFileSync(file[, args][, options]) function (in nod)? Then show cluster.fork or PM2. Then name the trap.

Exam tip

What is child_process.execFileSync(file[, args][, options]) function (in nod)? Show this: cluster.fork or PM2. Trap: in-memory session without sticky.

Example

const fs = require("fs");
const path = require("path");

const file = path.join(__dirname || ".", "demo.txt");
fs.writeFileSync(file, "hello node\n");
const text = fs.readFileSync(file, "utf8");
console.log(text.trim());
fs.unlinkSync(file);

child_process.execFileSync(file[, args][, options]) function in Node.js — fs reads/writes files. Prefer promises/async APIs in real apps.

Short notes

Defchild_process.execFileSync(file[, args][, options]) function (in nod) — use all CPU cores in production box.
Rulecluster.fork or PM2
Trapin-memory session without sticky
Useproduction box

const fs = require("fs"); const path = require("path"); const file = path.join(__dirname || ".", "demo.txt"); fs.writeFileSync(file, "hello node\n"); const text = fs.readFileSync(file, "utf8"); console.log(text.trim()); fs.unlinkSync(file);

child_process.execFileSync(file[, args][, options]) function in Node.js

Example

Short notes

Questions

child_process.execFileSync(file[, args][, options]) function in Node.js

Example

Short notes

Questions