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Large JSON / Object test (in stupid way)
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| "use strict"; | |
| Promise = require("bluebird"); | |
| var fs = require("fs"); | |
| var moment = require("moment"); | |
| var sample = []; | |
| var start, duration; | |
| // const ROWS = 2 * 1000 * 1000; // RangeError: Invalid string length | |
| const ROWS = 1 * 1000 * 1000; | |
| function beginCount() { | |
| start = moment(); | |
| } | |
| function endCount(desc) { | |
| duration = moment.duration(moment().diff(start)); | |
| console.log(desc, ":", duration.asMilliseconds()); | |
| } | |
| function benchmark_a() { | |
| return new Promise((resolve, reject) => { | |
| try { | |
| beginCount(); | |
| for (let i = 0; i <= ROWS; i++) { | |
| sample.push({ | |
| "ACCOUNT_NUMBER":"1234567890", | |
| "CUSTOMER_NAME":"ACME Products and Services, Inc.", | |
| "ADDRESS":"123 Main Street", | |
| "CITY":"Albuquerque", | |
| "STATE":"NM", | |
| "ZIP":"87101-1234" | |
| }); | |
| } | |
| endCount("filling"); | |
| beginCount(); | |
| let data = JSON.stringify(sample); | |
| endCount("stringify"); | |
| beginCount(); | |
| fs.writeFile(__dirname + "/sample.json", data, (err) => { | |
| if (!err) { | |
| endCount("writing"); | |
| resolve(); | |
| } else { | |
| reject(err); | |
| } | |
| }); | |
| } catch (err) { | |
| reject(err); | |
| } | |
| }); | |
| } | |
| function benchmark_b() { | |
| return new Promise((resolve, reject) => { | |
| try { | |
| beginCount(); | |
| fs.readFile(__dirname + "/sample.json", (err, data) => { | |
| if (!err) { | |
| endCount("reading"); | |
| beginCount(); | |
| sample = JSON.parse(data); | |
| endCount("parse"); | |
| resolve(); | |
| } else { | |
| reject(err); | |
| } | |
| }); | |
| } catch (err) { | |
| reject(err); | |
| } | |
| }); | |
| } | |
| Promise.all([]) | |
| .then(benchmark_a) | |
| .then(benchmark_b) | |
| .then(() => { console.log("done"); }) | |
| .catch((err) => { console.error(err); }); |
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| mkdir test && cd test | |
| touch index.js | |
| npm init | |
| npm install --save bluebird moment |
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