George Hotelling georgeh

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

Does the design expect failures to happen regularly and handle them gracefully?
Have we kept things as simple as possible?

Commander JavaScript

I have been wanting to gain some more Computer Science knowledge so I started reading more about Design Patterns. I have known about them for a long time and generally speaking my primary understanding ended at the Singleton pattern. I knew that there were other patterns defined but had no use for them since I didn't know them or how to use them.

Recently I have been building libraries of code more and have found that I like the Command Pattern a lot. Especially in JavaScript where some other language features are missing - or available depending on your point of view - which create problems for securing functionality from tampering.

Use Case

You are a developer wanting to create a new library for a particular purpose. You know that you are not going to necessarily think of everything, needed for other developers to use up front, so you want to also provide a way for them to add in features as they need to. You want to do this but don't want to allow them to harm the functionalit

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	function sync() {

	var id="XXXXXXXXXX"; // CHANGE - id of the secondary calendar to pull events from

	var today=new Date();
	var enddate=new Date();
	enddate.setDate(today.getDate()+7); // how many days in advance to monitor and block off time

	var secondaryCal=CalendarApp.getCalendarById(id);
	var secondaryEvents=secondaryCal.getEvents(today,enddate);

	#!/bin/sh -e

	# A simple script to keep a tidy ~/code directory organized by owner & then repo
	# When the script is done, just hit command-v to switch into the directory
	# (Github and Mac only. Sorry, openness!)
	#
	# Usage:
	# gloan <org>/<repo>
	# Or:
	# gloan <org> <repo>

	# The blog post that started it all: https://neocities.org/blog/the-fcc-is-now-rate-limited
	#
	# Current known FCC address ranges:
	# https://news.ycombinator.com/item?id=7716915
	#
	# Confirm/locate FCC IP ranges with this: http://whois.arin.net/rest/net/NET-165-135-0-0-1/pft
	#
	# In your nginx.conf:

	location / {

	/**
	* Gets tomorrow's events and sends along an email agenda.
	*/
	function mailAgenda(){
	// Configs.
	var config = {
	firstName: 'Brad',
	email: '[email protected]',
	ignoreRecurringEvents: true
	};