Neil Lyons nwjlyons

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Upgrading auth.User - the profile approach

This proposal presents a "middle ground" approach to improving and refactoring auth.User, based around a new concept of "profiles". These profiles provide the main customization hook for the user model, but the user model itself stays concrete and cannot be replaced.

I call it a middle ground because it doesn't go as far as refactoring the whole auth app -- a laudable goal, but one that I believe will ultimately take far too long -- but goes a bit further than just fixing the most egregious errors (username length, for example).

This proposal includes a fair number of design decisions -- you're reading the fifth or sixth draft. To keep things clear, the options have been pruned out and on the one I think is the "winner" is still there. But see the FAQ at the end for some discussion and justification of various choices.

The User model

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

	jQuery(function($) {
	$('form[data-async]').live('submit', function(event) {
	var $form = $(this);
	var $target = $($form.attr('data-target'));

	$.ajax({
	type: $form.attr('method'),
	url: $form.attr('action'),
	data: $form.serialize(),

	// Source: https://groups.google.com/forum/#!topic/angular/hVrkvaHGOfc
	// jsFiddle: http://jsfiddle.net/pkozlowski_opensource/PxdSP/14/
	// author: Pawel Kozlowski

	var myApp = angular.module('myApp', []);

	//service style, probably the simplest one
	myApp.service('helloWorldFromService', function() {
	this.sayHello = function() {
	return "Hello, World!"

	#!/bin/bash
	# View Website source with syntax highlighting via Pygmentize

	echo "Viewing Source for $1"
	read -p "USAGE: viewsource http://www.website.com/ (Press Enter To Continue)"

	curl -s "$1" \| pygmentize -f terminal256 -l html -O style=monokai

	exit

	import os
	import struct
	import numpy as np

	"""
	MNist loading helper for Python 2.7.

	For Python 3.x, see https://gist.github.com/akesling/42393ccb868125071fdea77d98a0d2f0

	Loosely inspired by http://abel.ee.ucla.edu/cvxopt/_downloads/mnist.py

	var gulp = require('gulp');

	gulp.task('default', function() {
	console.log('Hello world.');
	});

	Each YouTube video has 4 generated images. They are predictably formatted as follows:
	http://img.youtube.com/vi/<insert-youtube-video-id-here>/0.jpg
	http://img.youtube.com/vi/<insert-youtube-video-id-here>/1.jpg
	http://img.youtube.com/vi/<insert-youtube-video-id-here>/2.jpg
	http://img.youtube.com/vi/<insert-youtube-video-id-here>/3.jpg
	The first one in the list is a full size image and others are thumbnail images. The default thumbnail image (ie. one of 1.jpg, 2.jpg, 3.jpg) is:

	http://img.youtube.com/vi/<insert-youtube-video-id-here>/default.jpg
	For the high quality version of the thumbnail use a url similar to this:

	package main

	import (
	"net/http"
	"database/sql"
	"fmt"
	"log"
	"os"
	)