pillarjs/router benchmarks

router-benchmark.js

'use strict'

var http = require('http')
var request = require('supertest')
var Router = require('router')
var finalhandler = require('finalhandler')

var N = parseInt(process.env.N, 10)
var router = Router()

router.use(function (req, res, next) {
  console.time('request')
  next()
})

for (let i = 0; i < N; i++) {
  router.use(function (req, res, next) {
    next()
  })
}

router.use(function (req, res) {
  console.timeEnd('request')
  res.end('done')
})

var server = http.createServer(function (req, res) {
  router(req, res, finalhandler(req, res))
})

request(server)
.get('/')
.expect('done')
.end(function (error) {
  if (error) { throw error }
})

router-benchmark.sh

#!/bin/bash

benchmark() {
  echo "$1 middleware:"
  N=$1 node router-benchmark.js
  N=$1 node router-benchmark.js
  N=$1 node router-benchmark.js
  N=$1 node router-benchmark.js
  N=$1 node router-benchmark.js
  echo
}

benchmark 10
benchmark 800
benchmark 1000
benchmark 1200
benchmark 1500

Results as discussed in pillarjs/router#26

$ npm install [email protected]
$ ./router-benchmark.sh
10 middleware:
request: 1ms
request: 1ms
request: 1ms
request: 1ms
request: 1ms

800 middleware:
request: 4ms
request: 3ms
request: 2ms
request: 3ms
request: 3ms

1000 middleware:
request: 5ms
request: 6ms
request: 6ms
request: 6ms
request: 6ms

1200 middleware:
request: 5ms
request: 6ms
request: 4ms
request: 5ms
request: 5ms

1500 middleware:
request: 3ms
request: 3ms
request: 4ms
request: 4ms
request: 4ms

$ npm install calebmer/router#many-next
$ ./router-benchmark
10 middleware:
request: 1ms
request: 0ms
request: 1ms
request: 1ms
request: 1ms

800 middleware:
request: 3ms
request: 4ms
request: 4ms
request: 3ms
request: 3ms

1000 middleware:
request: 5ms
request: 6ms
request: 5ms
request: 5ms
request: 6ms

1200 middleware:
request: 5ms
request: 6ms
request: 7ms
request: 6ms
request: 7ms

1500 middleware:
stack size exceeded
request: 5ms
request: 4ms
request: 4ms
stack size exceeded