Node.js · Theory

Buffer.swap64() Method

Theory

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Buffer.swap64() Method is a Node.js idea you prove with read a big CSV, not with a slogan.

Keep Buffer.swap64() Method small. Farhan should finish read a big CSV in a few lines, not a 40-line dump.

Buffer.swap64() Method exists so Farhan can keep read a big CSV correct in an upload job.

Farhan ships Buffer.swap64() Method in an upload job. That is the use case worth saying.

Buffer.swap64() Method trap — loading the whole file into RAM. Farhan loses marks for that every viva.

Place Buffer.swap64() Method next to nearby Node.js work — createReadStream is the link.

Viva for Buffer.swap64() Method — what it is → createReadStream → the mistake (loading the whole file into RAM).

Exam tip

Board: read a big CSV. Dry-run Buffer.swap64() Method. 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.swap64() Method — buffer holds raw binary data outside the V8 string heap.