Node.js · Theory

Buffer.concat() method in Node.js

Theory

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

Buffer.concat() method (in node js) on the board: createReadStream. Then say what read a big CSV looks like after.

Without Buffer.concat() method (in node js), an upload job gets messy and read a big CSV is hard to trust.

Buffer.concat() method (in node js) shows up in an upload job. Name read a big CSV, not “a real-world scenario”.

Buffer.concat() method (in node js) trap: loading the whole file into RAM. Arun loses marks for that every viva.

Place Buffer.concat() method (in node js) next to nearby Node.js work — createReadStream is the link.

Close Buffer.concat() method (in node js) with: “If I skip it, read a big CSV goes wrong like this: loading the whole file into RAM.”

Exam tip

Board: read a big CSV. Dry-run Buffer.concat() method (in node js). Name the trap: loading the whole file into RAM.

const buf = Buffer.from("PrepPilot", "utf8");
console.log(buf.toString("utf8"));
console.log(buf.length);

Buffer.concat() method in Node.js — buffer holds raw binary data outside the V8 string heap.

DefBuffer.concat() method (in node js) — Arun uses it for read a big CSV in an upload job.
RuleBuffer.concat() method (in node js) → createReadStream.
RememberBuffer.concat() method (in node js) + an Express route (an upload job).
UseBuffer.concat() method (in node js) in an upload job (read a big CSV).
TrapBuffer.concat() method (in node js) — loading the whole file into RAM.
ExBuffer.concat() method (in node js) → read a big CSV.