Created
December 27, 2018 21:21
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A benchmark test for finding a random record using nodejs and mongoose
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const mongoose = require('mongoose'), | |
Benchmark = require('benchmark'), | |
Promise = require('bluebird') | |
mongoose.connect('mongodb://localhost:27017/sandbox', {useNewUrlParser: true}) | |
const Model = mongoose.model('Model', new mongoose.Schema({ | |
name: String | |
})) | |
findRandom().then(() => { | |
process.exit(0) | |
}) | |
async function findRandom() { | |
await populateData() | |
await doTest(); | |
} | |
async function populateData() { | |
console.log("Populating test data...") | |
await Model.deleteMany({}) | |
for (let n = 0; n < 10; n++) { | |
let ops = [] | |
for (let i = 0; i < 100000; i++) { | |
let r = Math.random() | |
ops.push({ | |
insertOne: { | |
document: { | |
name: n.toString() + i | |
} | |
} | |
}) | |
} | |
await Model.bulkWrite(ops) | |
ops = undefined | |
} | |
console.log("Complete") | |
} | |
async function doTest() { | |
return new Promise(function(resolve, reject) { | |
let suite = new Benchmark.Suite | |
suite | |
.add('"skip"', { | |
defer: true, | |
fn: function(deferred) { | |
skip().then(() => { deferred.resolve() }) | |
} | |
}) | |
.add('"sample"', { | |
defer: true, | |
fn: function(deferred) { | |
sample().then(() => { deferred.resolve() }) | |
} | |
}) | |
.on('cycle', function(event) { | |
console.log(String(event.target)) | |
}) | |
.on('complete', function() { | |
console.log('Fastest is ' + this.filter('fastest').map('name')) | |
resolve() | |
}) | |
.run({async: true}) | |
}) | |
} | |
async function skip() { | |
let count = await Model.countDocuments({}) | |
return await Model.findOne({}).skip(Math.floor(Math.random()*count)).lean() | |
} | |
async function sample() { | |
let results = await Model.aggregate( | |
[ { $sample: { size: 1 } } ] | |
) | |
return results[0] | |
} |
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