Page 134 - Nodejs 교과서 개정2판

buffer-memory.js
const fs = require('fs');

console.log('before: ', process.memoryUsage().rss);

const data1 = fs.readFileSync('./big.txt');
fs.writeFileSync('./big2.txt', data1);
console.log('buffer: ', process.memoryUsage().rss);

콘솔

$ node buffer-memory
before: 18137088
buffer: 1019133952

୊਺ী .#৓؍ ݫݽܻ ਊ۝੉ ࣽधрী (#ܳ ֈ঻णפ׮ (# ਊ۝੄ ౵ੌਸ ࠂࢎೞӝ ਤ೧ ݫݽܻী ౵
ੌਸ ݽف ৢ۰ك റ writeFileSyncܳ ࣻ೯೮ӝ ٸޙੑפ׮

੉ߣীח झ౟ܿਸ ࢎਊೞৈ ౵ੌਸ CJH UYU۽ ࠂࢎ೧ࠁѷणפ׮

stream-memory.js

const fs = require('fs');

console.log('before: ', process.memoryUsage().rss);

const readStream = fs.createReadStream('./big.txt');
const writeStream = fs.createWriteStream('./big3.txt');
readStream.pipe(writeStream);
readStream.on('end', () => {
console.log('stream: ', process.memoryUsage().rss);
});

콘솔

$ node stream-memory
before: 18087936
stream: 62472192

झ౟ܿਸ ࢎਊ೧ࢲ ౵ੌਸ ࠂࢎ೮؊פ ݫݽܻܳ .#߆ী ର૑ೞ૑ ঋणפ׮ ੉੹ ߑध੉ (# ਊ۝ਸ ର૑
೮؍ Ѫী ࠺ೞݶ ষ୒դ ѐࢶ ബҗੑפ׮ ௾ ౵ੌਸ ઑпղয ੘਷ ߡಌ ױਤ۽ ৤҂ӝ ٸޙੑפ׮ ੉ۧѱ झ

౟ܿਸ ࢎਊೞݶ ബҗ੸ਵ۽ ؘ੉ఠܳ ੹࣠ೡ ࣻ ੓णפ׮ ز৔࢚ э਷ ௾ ౵ੌٜਸ ੹࣠ೡ ٸ ੉۞ೠ ੉ਬ۽