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Stream.duplex in Node.js

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Stream.duplex in Node.js

Don’t start Stream.duplex (in node js) with jargon. Start with read a big CSV. That is the whole point.

Stream.duplex (in node js) order — meaning → createReadStream → one limit. Dumping ten features helps nobody.

Skip Stream.duplex (in node js) and loading the whole file into RAM shows up in an upload job.

Arun ships Stream.duplex (in node js) in an upload job. That is the use case worth saying.

If read a big CSV breaks under Stream.duplex (in node js), check loading the whole file into RAM first.

After Stream.duplex (in node js), Arun should still remember loading the whole file into RAM.

One breath for Stream.duplex (in node js), then read a big CSV, then loading the whole file into RAM. Sit down.

Exam tip

For Stream.duplex (in node js): definition + an upload job + one failure.

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.duplex in Node.js — fs reads/writes files. Prefer promises/async APIs in real apps.

Short notes

DefStream.duplex (in node js) — Arun uses it for read a big CSV in an upload job.
RuleStream.duplex (in node js) → createReadStream.
RememberStream.duplex (in node js) + the event loop (an upload job).
UseStream.duplex (in node js) in an upload job (read a big CSV).
TrapStream.duplex (in node js) — loading the whole file into RAM.
ExStream.duplex (in node js) → read a big CSV.

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.duplex in Node.js

Example

Short notes

Questions

Stream.duplex in Node.js

Example

Short notes

Questions