DoubleMalt

Technical Due Diligence

Architecture

• Component Overview
• Technologies (DB, Languages, Frameworks)

Functionalities

jult

# IPv6 Configuration
# -> note that I have disabled ip6 for our internet-connection (wan/eth0) because
# -> my upstream/ISP (still) does not do IPv6. The rest, even localhost, does ip6 stuff.
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv6.conf.eth0.disable_ipv6 = 1
net.ipv6.conf.wan.disable_ipv6 = 1

# Packet Forwarding

zveronline

acl from_cf src -f /etc/haproxy/cf-ips
http-request set-src req.hdr(CF-Connecting-IP) if from_cf
option forwardfor if-none

ptarjan

Scaling your API with rate limiters

The following are examples of the four types rate limiters discussed in the accompanying blog post. In the examples below I've used pseudocode-like Ruby, so if you're unfamiliar with Ruby you should be able to easily translate this approach to other languages. Complete examples in Ruby are also provided later in this gist.

In most cases you'll want all these examples to be classes, but I've used simple functions here to keep the code samples brief.

Request rate limiter

This uses a basic token bucket algorithm and relies on the fact that Redis scripts execute atomically. No other operations can run between fetching the count and writing the new count.

sielay

frontend www-http
    bind :80
    bind *:443 ssl crt /etc/haproxy/certs no-sslv3

    capture request header X-Forwarded-For len 50

    acl is_cf req.hdr(cf-connecting-ip) -m found

    http-request set-header X-Client-IP %[src] if !is_cf
    http-request set-header X-Client-IP %[hdr(cf-connecting-ip)] if is_cf

thanpolas

module.exports = function (grunt) {
  require('load-grunt-tasks')(grunt);

  grunt.initConfig({
    express: {
      options: {
        // Override defaults here
      },
      web: {
        options: {

jonschlinkert

Markdown cheatsheet

(Also see [remarkable][], the markdown parser created by the author of this cheatsheet)

Table of contents

• Standard features
  • Headings
  • Paragraphs

• Breaks

dmytro

#!/bin/bash
# ssh-multi
# D.Kovalov
# Based on http://linuxpixies.blogspot.jp/2011/06/tmux-copy-mode-and-how-to-control.html

# a script to ssh multiple servers over multiple tmux panes


starttmux() {
    if [ -z "$HOSTS" ]; then

kylebragger

var playSingleChime = function()
{
    var context = new webkitAudioContext(),
        gain = context.createGainNode(),
        osc = context.createOscillator();

    osc.connect(gain);
    gain.connect(context.destination);

    osc.frequency.value = 1000.0;

kylebragger

var context = new webkitAudioContext(),
    oscillator = context.createOscillator();

oscillator.type = oscillator.SQUARE;
oscillator.frequency.value = 1000;
oscillator.connect(context.destination);
oscillator.noteOn && oscillator.noteOn(0);
setTimeout('oscillator.disconnect()', 500);