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| import { MongoClient } from 'mongodb' | |
| import Bluebird from 'bluebird' | |
| import { add, identity, times } from 'ramda' | |
| const client = new MongoClient('<redacted>') | |
| const db = client.db('searchtest') | |
| const limit = 1e6 | |
| const runs = 1 | |
| function setupIndex () { | |
| return db | |
| .collection('file') | |
| .createIndex({ name: 'text' }) | |
| } | |
| function choice<T> (i: T[]): T | never { | |
| const length = i.length | |
| const index = Math.floor(Math.random() * length) | |
| if (!i[index]) throw new Error() | |
| return i[index]! | |
| } | |
| async function fixture () { | |
| const lib = [ | |
| [ 'Super', 'Extra', 'Extreme', 'Cool' ], | |
| [ 'Sales', 'Fails', 'Pales', 'Fales', 'Males', 'Rails' ], | |
| ] | |
| const payloads = times(() => { | |
| const firstLib = lib[0]! | |
| const secondLib = lib[1]! | |
| const first = choice<string>(firstLib) | |
| const second = choice<string>(secondLib) | |
| const third = Math.floor(Math.random() * 1e6) | |
| return { | |
| _id: Math.random().toString(16), | |
| name: `${first} ${second} ${third}`, | |
| } | |
| }, 1e6) | |
| console.log(`Generated ${payloads.length} payloads`) | |
| console.log('Inserting') | |
| return db | |
| .collection<File>('file') | |
| .insertMany(payloads) | |
| } | |
| async function searchWithRegex (query: string) { | |
| return db | |
| .collection<File>('file') | |
| .find({ | |
| name: { $regex: query, $options: 'i' }, | |
| }) | |
| .limit(limit) | |
| .explain('executionStats') | |
| .then((r) => r.executionStats.executionTimeMillis) | |
| } | |
| async function searchWithText (query: string) { | |
| return db | |
| .collection<File>('file') | |
| .find({ | |
| $text: { $search: query, $caseSensitive: false }, | |
| }) | |
| .limit(limit) | |
| .explain('executionStats') | |
| .then((r) => r.executionStats.executionTimeMillis) | |
| } | |
| async function searchWithAtlasSearch (query: string) { | |
| return db | |
| .collection<File>('file') | |
| .aggregate( | |
| [ | |
| { | |
| $search: { | |
| index: 'name', | |
| text: { | |
| query, | |
| path: { | |
| wildcard: '*', | |
| }, | |
| }, | |
| }, | |
| }, | |
| { | |
| $limit: limit, | |
| }, | |
| ], | |
| { explain: true }, | |
| ) | |
| .explain('executionStats') | |
| .then((r) => r.stages[0].executionTimeMillisEstimate) | |
| } | |
| function avg (i: number[]) { | |
| const sum = i.reduce(add, 0) | |
| return sum / i.length | |
| } | |
| async function time (fn: () => Promise<number>, pattern: string): Promise<string> { | |
| const t: number[] = [] | |
| const tt: number[] = [] | |
| console.log(`Benching "${pattern}":`) | |
| await Bluebird.mapSeries( | |
| times(identity, runs), | |
| async () => { | |
| const s = Date.now() | |
| const r = await fn() | |
| t.push(r) | |
| tt.push(Date.now() - s) | |
| }, | |
| ) | |
| const statsObj = { | |
| avg: avg(t) + 'ms', | |
| min: Math.min(...t) + 'ms', | |
| max: Math.max(...t) + 'ms', | |
| avgRuntime: avg(tt) + 'ms', | |
| } | |
| const stats = `avgDb: ${statsObj.avg} | avgRuntime: ${statsObj.avgRuntime} | minDb: ${statsObj.min} | maxDb: ${statsObj.max} | runs: ${runs} | queryLimit: ${limit}` | |
| return `${JSON.stringify(stats)}` | |
| } | |
| async function main () { | |
| console.log('Connecting') | |
| await client.connect() | |
| console.log('Dropping DB') | |
| await db.dropDatabase() | |
| console.log('Indexing') | |
| await setupIndex() | |
| console.log('Applying fixture') | |
| await fixture() | |
| console.log('Searching') | |
| const query = 'Extreme' | |
| console.log(await time(() => searchWithAtlasSearch(query), '$search')) | |
| console.log(await time(() => searchWithText(query), '$text')) | |
| console.log(await time(() => searchWithRegex(query), '$regex')) | |
| process.exit(0) | |
| } | |
| main() | |
| interface File { | |
| _id: string | |
| name: string | |
| } |
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