thalesfsp

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

thalesfsp

package main

import (
	"fmt"
	"net/http"
	"sort"
	"time"
)

// a struct to hold the result from each request including an index

thalesfsp

Custom JSON Marshalling in Go

Go’s encoding/json package makes it really easy to marshal structs to JSON data.

package main

import (
	"encoding/json"
	"os"

thalesfsp

⚠️ Content below I now consider obsolete. My latest guide is now located here: Technical guide for using YubiKey series 4 for GPG and SSH. Please consult that resource instead.

---

Quick GPG Smartcard Guide

thalesfsp

#!/bin/bash

export version=v4.2.8
export os=linux
export arch=amd64

#####################################

curl -O https://get.gravitational.com/teleport-$version-$os-$arch-bin.tar.gz
tar -xzf teleport-$version-$os-$arch-bin.tar.gz

thalesfsp

I've spent the day trying to get this setup working with GitHub and given the number of gotcha's I encountered, it seemed like a good idea to document how I finally got this working with as few hacks as possible. There's a lot of documentation out there (some of it old and misleading) and committing here for posterity will help me remember this when I inevitably need to do this again.

Rationale

Passwords are simply not enough these days. Regardless of the company, breaches (and the associated Personally Identifiable Information harvested) are a matter of not if, but when. There are a number of things you can do to protect yourself, but being on the tin-foil-hat side of paranoia, means there are a few Commandents that I adhere to (and recommend for other folks)[Insert link to Fight Club Rules for the Secure Internet].

That being said, if you use 2-factor authentication and have committed to using a hardware token such as the Yubikey, then you're already ahead of the curve. The problem is that wh

thalesfsp

/**
 * Copyright 2012 Akseli Palén.
 * Created 2012-07-15.
 * Licensed under the MIT license.
 * 
 * <license>
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,

thalesfsp

{
  "openapi": "3.0.0",
  "info": {
    "title": "mavenapi",
    "version": "1.0",
    "contact": {
      "name": "Wrecing Ball",
      "url": "https://www.getwrecked.com",
      "email": "[email protected]"
    }

thalesfsp

// It is mainly used for implementing distributed event handling systems, in "event driven" software.
// Channels could have been used.

package main

//////
// Starts here.
//////

func main() {

thalesfsp

package main

import (
	"flag"
	"io"
	"log"
	"net"
	"net/http"
	"strings"
)