meaku

//knoten.js Netzdiener-Beispiel in DEUTSCHskript
var Http = FordereAn('http');

Http.ErstelleDiener(Funktion (Anf, Ant) {
  Ant.SchreibeKopf(200, { "Inhalts-Art" : "text/blank"});
	Ant.Beenden("Hallo Welt \n");	
}).höre(1337, "LokalerGastgeber");

meaku

# HTTP(S) Stuff
# Redirect all users except IE 5-8 & Android < 4 to HTTPS
RewriteCond %{SERVER_PORT} !^443$
RewriteCond %{HTTP_USER_AGENT} !MSIE\ [5-8]
RewriteCond %{HTTP_USER_AGENT} !Android.*(Mobile)?\ [0-3]
RewriteRule (.*)  https://%{HTTP_HOST}/$1   [L]

meaku

# enable basic auth for dev systems
SetEnvIfNoCase Host dev\.host\.com passreq

AuthType Basic
AuthName "Testing"
AuthUserFile htuser
Require valid-user

Order deny,allow
Deny from env=passreq

meaku

Try certain keys

ssh-add -R #deletes all loaded keys

add-add ~/.ssh/myKey #add the desired key

git clone ...  #see what happens

meaku

#!/usr/bin/env node

"use strict";

console.log("checking for auto responses");

var fs = require("fs"),
    exec = require("child_process").exec;

var input = "";

meaku

Prerequisites

• Stackvis
• FlameGraph (cloned to ~/tools/FlameGraph)

Record perf data

perf record -i -g -e cycles:u -- node --perf-basic-prof app.js

• generate some load!

meaku

Setup

• http://www.brendangregg.com/blog/2014-09-17/node-flame-graphs-on-linux.html
• https://gist.github.com/trevnorris/9616784

Example

meaku

"use strict";

var request = require("request");

function fetchKeys(userName) {

    return new Promise(function (resolve, reject) {
        request(`https://github.com/${userName}.keys`, function (err, res, body) {
            if (err) {
                reject(err);

meaku

"use strict";

var util = require("util");
var Writable = require("stream").Writable;

var model = require("../db/dynamodb");

/**
 * Log Stream
 *

meaku

Passing values

Problem: Promises resolve only with a single value. If you want to pass on the result of PromiseCall1 to PromiseCall2, you have different options:

Nesting

You can nest a .then() for Promise Call 2 and return both value from the scope.

• Nesting makes it harder to read and should be avoided