mafintosh

{
  valueSize: 37,
  length: 100242424,
  values: [ /* all of the above is white space padded to 64 bytes */
    {key: ..., },/* padding */
    {key: ...
  ]
}

mafintosh

function iterate (db, onnode, done) {
  visit(db, [], onnode, cb)
}

function visit (db, path, onnode, cb) {
  var val = 0
  loop(null)

  function loop (err) {
    if (err) return cb(err)

mafintosh

git-checkout-fork () {
  local REPO=$(basename $PWD)
  local USERNAME=$(echo $1 | sed 's|:.*||')
  local FORK=$(echo $1 | sed 's|.*:||')

  if [ "$(git remote | grep ^$USERNAME\$ 2>/dev/null)" == "" ]; then
    git remote add $USERNAME git://github.com/$USERNAME/$REPO
  fi

  git checkout -B $USERNAME-$FORK

mafintosh

{
  "targets": [{
    "target_name": "async_worker_test",
    "sources": [
      "./test.c"
    ],
    "xcode_settings": {
      "OTHER_CFLAGS": [
        "-O3",
        "-std=c99",

mafintosh

Running 10s test @ http://127.0.0.1:8080
10 connections

Stat         Avg      Stdev   Max    
Latency (ms) 0.05     0.23    7.63   
Req/Sec      15811.28 1290.87 17155  
Bytes/Sec    1.76 MB  143 kB  1.9 MB 

174k requests in 11s, 19.3 MB read

mafintosh

var http = require('http')
var fs = require('fs')

var server = http.createServer(function (req, res) {
  fs.createReadStream('/home/maf/downloads/big.file')
    .pipe(res)
})

server.listen(10000)

mafintosh

/* ASYNC TIME | ASYNC OPS | DIRECT ASYNC OPS | */
/*            |           |                  | */ var http = require('http')
/*            |           |                  | */ var fs = require('fs')
/*            |           |                  | */ 
/*            |           |                  | */ var filename = __filename
/*            |           |                  | */ 
/*            |           |                  | */ var server = http.createServer(function (req, res) {
/*       1804 |      2239 |             2239 | */   fs.stat(filename, function (err) {
/*            |           |                  | */     if (err) return res.end()
/*     124957 |     31351 |             2239 | */     fs.createReadStream(filename)

mafintosh

/*   TIME | ASYNC OPS | */
/*        |           | */ var http = require('http')
/*        |           | */ var fs = require('fs')
/*        |           | */ 
/*        |           | */ var filename = __filename
/*        |           | */ 
/*        |           | */ var server = http.createServer(function (req, res) {
/*   1873 |      2238 | */   fs.stat(filename, function (err) {
/*        |           | */     if (err) return res.end()
/* 126368 |     33581 | */     fs.createReadStream(filename).pipe(res)

mafintosh

                                              confidence improvement accuracy (*)   (**)  (***)
 process/next-tick-breadth-args.js millions=4        ***     29.97 %       ±2.02% ±2.70% ±3.53%
 process/next-tick-breadth.js millions=4              **      3.99 %       ±2.41% ±3.21% ±4.19%
 process/next-tick-depth-args.js millions=12         ***      4.07 %       ±0.64% ±0.85% ±1.11%
 process/next-tick-depth.js millions=12              ***     16.11 %       ±1.35% ±1.80% ±2.34%
 process/next-tick-exec-args.js millions=5           ***     23.27 %       ±1.29% ±1.72% ±2.25%
 process/next-tick-exec.js millions=5                ***     68.86 %       ±3.77% ±5.03% ±6.58%

Be aware that when doing many comparisions the risk of a false-positive
result increases. In this case there are 6 comparisions, you can thus

mafintosh

const stream = require('stream')
const cache = new Map() // you might wanna use an lru here

function createCacheStream (url) {
  const buf = []
  return stream.Transform({
    transform: function (data, enc, cb) {
      buffer.push(data)
      cb(null, data)
    },