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Buffers

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Buffers

Isha only reaches for Buffers when read a big CSV has to stay correct in an upload job.

For Buffers, the event loop is in play. Don’t blame it until you have traced read a big CSV.

Skip Buffers and loading the whole file into RAM shows up in an upload job.

Isha ships Buffers in an upload job. That is the use case worth saying.

Buffers miss — loading the whole file into RAM. Fix it before you talk about advanced Node.js.

After Buffers, Isha should still remember loading the whole file into RAM.

Close Buffers with — “If I skip it, read a big CSV goes wrong like this: loading the whole file into RAM.”

Exam tip

Say Buffers in one breath, then createReadStream, then loading the whole file into RAM.

Example

// Buffers
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));

Buffers: find user 2, then list names. Say both prints.

Short notes

DefBuffers — Isha uses it for read a big CSV in an upload job.
RuleBuffers → createReadStream.
RememberBuffers + the event loop (an upload job).
UseBuffers in an upload job (read a big CSV).
TrapBuffers — loading the whole file into RAM.
ExBuffers → read a big CSV.

// Buffers 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));

Buffers

Example

Short notes

Questions

Buffers

Example

Short notes

Questions