Stream writable.writableHighWaterMark Property — Node.js Technical Interview Questions & Answers

Stream writable.writableHighWaterMark Property

Stream writable.writableHighWaterMark Property

  • Stream writable.writableHighWaterMark Property is a Node.js topic. In plain words you use it for read a big CSV in an upload job. Don’t start with a slogan — start with that picture.
  • Smallest example: createReadStream. Type it, run it, and say what you see. If you can do that from memory, you know Stream writable.writableHighWaterMark Property.
  • From the example next to this theory: Stream writable.
  • Trap: loading the whole file into RAM. Fix that before you talk about advanced Node.js.
  • Viva: what is Stream writable.writableHighWaterMark Property? Then show createReadStream. Then name the trap.

Technical Interview Tip: What is Stream writable.writableHighWaterMark Property? Show this: createReadStream. Trap: loading the whole file into RAM.

Code Examples for Stream writable.writableHighWaterMark Property

Stream writable.writableHighWaterMark Property — working 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);

Stream writable.writableHighWaterMark Property — fs reads/writes files. Prefer promises/async APIs in real apps.

How to Explain Stream writable.writableHighWaterMark Property to an Interviewer

What is Stream writable.writableHighWaterMark Property?

Used for read a big CSV an upload job Not just the heading

Give one small example of Stream writable.writableHighWaterMark Property.

createReadStream Stream writable

What mistake do beginners make with Stream writable.writableHighWaterMark Property?

loading the whole file into RAM Show the fix

Where do you use Stream writable.writableHighWaterMark Property?

an upload job read a big CSV