Node.js · Theory

http2stream.respondWithFD(fd[, headers[, options]]) function in Node.js

Theory

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http2stream.respondWithFD(fd[, headers[, options]]) function in Node.js

http2stream.respondWithFD(fd[, headers[, options]]) function (in nod) is a Node.js idea you prove with read a big CSV, not with a slogan.

http2stream.respondWithFD(fd[, headers[, options]]) function (in nod) order: meaning → createReadStream → one limit. Dumping ten features helps nobody.

http2stream.respondWithFD(fd[, headers[, options]]) function (in nod) exists so Riya can keep read a big CSV correct in an upload job.

http2stream.respondWithFD(fd[, headers[, options]]) function (in nod) shows up in an upload job. Name read a big CSV, not “a real-world scenario”.

Don’t do this with http2stream.respondWithFD(fd[, headers[, options]]) function (in nod): loading the whole file into RAM. Interviewers spot it in ten seconds.

After http2stream.respondWithFD(fd[, headers[, options]]) function (in nod), Riya should still remember loading the whole file into RAM.

Viva for http2stream.respondWithFD(fd[, headers[, options]]) function (in nod): what it is → createReadStream → the mistake (loading the whole file into RAM).

Diagram

  request
      │
      ▼
  event loop
      │ I/O done
      ▼
  response

Exam tip

For http2stream.respondWithFD(fd[, headers[, options]]) function (in nod): definition + an upload job + one failure.

Example

// http2stream.respondWithFD(fd[, headers[, options]]) function 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));

http2stream.respondWithFD(fd[, headers[, options]]) function in Node.js: find user 2, then list names. Say both prints.

Short notes

Defhttp2stream.respondWithFD(fd[, headers[, options]]) function (in nod) — Riya uses it for read a big CSV in an upload job.
Rulehttp2stream.respondWithFD(fd[, headers[, options]]) function (in nod) → createReadStream.
Rememberhttp2stream.respondWithFD(fd[, headers[, options]]) function (in nod) + npm (an upload job).
Usehttp2stream.respondWithFD(fd[, headers[, options]]) function (in nod) in an upload job (read a big CSV).
Traphttp2stream.respondWithFD(fd[, headers[, options]]) function (in nod) — loading the whole file into RAM.
Exhttp2stream.respondWithFD(fd[, headers[, options]]) function (in nod) → read a big CSV.

// http2stream.respondWithFD(fd[, headers[, options]]) function 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));

http2stream.respondWithFD(fd[, headers[, options]]) function in Node.js

Example

Short notes

Questions

http2stream.respondWithFD(fd[, headers[, options]]) function in Node.js

Example

Short notes

Questions