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Node.js · Theory

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

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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 idea you prove with use all CPU cores, not with a slogan.

child_process.execFileSync(file[, args][, options]) function (in nod) on the board: cluster.fork or PM2. Then say what use all CPU cores looks like after.

Without child_process.execFileSync(file[, args][, options]) function (in nod), production box gets messy and use all CPU cores is hard to trust.

Use child_process.execFileSync(file[, args][, options]) function (in nod) when use all CPU cores must stay clear. If a simpler Node.js step works, use that instead.

If use all CPU cores breaks under child_process.execFileSync(file[, args][, options]) function (in nod), check in-memory session without sticky first.

After child_process.execFileSync(file[, args][, options]) function (in nod), Rohit should still remember in-memory session without sticky.

Close child_process.execFileSync(file[, args][, options]) function (in nod) with: “If I skip it, use all CPU cores goes wrong like this: in-memory session without sticky.”

Exam tip

Say child_process.execFileSync(file[, args][, options]) function (in nod) in one breath, then cluster.fork or PM2, then 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) — Rohit uses it for use all CPU cores in production box.
  • Rulechild_process.execFileSync(file[, args][, options]) function (in nod) → cluster.fork or PM2.
  • Rememberchild_process.execFileSync(file[, args][, options]) function (in nod) + an Express route (production box).
  • Usechild_process.execFileSync(file[, args][, options]) function (in nod) in production box (use all CPU cores).
  • Trapchild_process.execFileSync(file[, args][, options]) function (in nod) — in-memory session without sticky.
  • Exchild_process.execFileSync(file[, args][, options]) function (in nod) → use all CPU cores.

Questions

1

In one breath: what does child_process.execFileSync(file[, args][, options]) function (in nod) do for Rohit?

2

If you skip child_process.execFileSync(file[, args][, options]) function (in nod), what breaks in production box?

3

What trap does Rohit hit with child_process.execFileSync(file[, args][, options]) function (in nod)?

4

Dry-run cluster.fork or PM2 and say the result.

Previous← tracingChannel.traceCallback(fn[, position[, context[, thisArg[, ...args]]]]) function in Node.jsNextValidation in Node.js →
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