Node.js · Theory

Buffer.readBigInt64BE() Method

Theory

201/723

Don’t start Buffer.readBigInt64BE() Method with jargon. Start with read a big CSV. That is the whole point.

Keep Buffer.readBigInt64BE() Method small. Kabir should finish read a big CSV in a few lines, not a 40-line dump.

Skip Buffer.readBigInt64BE() Method and loading the whole file into RAM shows up in an upload job.

Kabir ships Buffer.readBigInt64BE() Method in an upload job. That is the use case worth saying.

Don’t do this with Buffer.readBigInt64BE() Method: loading the whole file into RAM. Interviewers spot it in ten seconds.

Place Buffer.readBigInt64BE() Method next to nearby Node.js work — createReadStream is the link.

Close Buffer.readBigInt64BE() Method with: “If I skip it, read a big CSV goes wrong like this: loading the whole file into RAM.”

Exam tip

Say Buffer.readBigInt64BE() Method in one breath, then createReadStream, then loading the whole file into RAM.

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

Buffer.readBigInt64BE() Method — buffer holds raw binary data outside the V8 string heap.

DefBuffer.readBigInt64BE() Method — Kabir uses it for read a big CSV in an upload job.
RuleBuffer.readBigInt64BE() Method → createReadStream.
RememberBuffer.readBigInt64BE() Method + the event loop (an upload job).
UseBuffer.readBigInt64BE() Method in an upload job (read a big CSV).
TrapBuffer.readBigInt64BE() Method — loading the whole file into RAM.
ExBuffer.readBigInt64BE() Method → read a big CSV.