架构师训练营 第 7 周作业

import P from 'bluebird'
import { request } from 'urllib'
import { Histogram } from 'measured-core'
import minimist from 'minimist'
import assert from 'assert'
const argv = minimist(process.argv.slice(2))
const histogram = new Histogram()
class Benchmark {
  private total = argv.n
  private url = argv.u
  public async exec(concurrency) {
    histogram.reset()
    await P.map(
      Array(this.total).fill(0),
      async () => {
        const start = Date.now()
        await request(this.url)
        histogram.update(Date.now() - start)
      },
      { concurrency }
    )
    const metrics = histogram.toJSON()
    console.log(`mean: ${metrics.mean}ms, p95: ${metrics.p95}ms`)
  }
}
async function main() {
  assert(argv.c && argv.u && argv.n, `node index.ts -n 1000 -u 'https://test.com' -c 10`)
  await new Benchmark().exec(argv.c)
}
main().then(() => {
  process.exit(0)
})