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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?

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#!/usr/bin/env python
# -*- coding: utf-8 -*-

stu_id = 'your student id'
username = password = 'use your own credential, hint: 00xxxxx'

host = '10.14.101.169'
login_url = 'http://10.14.101.169/LogOn'
lab_url ='http://10.14.101.169/TA/lab/Edit/114'
check_url = 'http://10.14.101.169/QianDao'

zyan0

from selenium import webdriver
from selenium.common.exceptions import TimeoutException
import selenium.webdriver.support.wait
selenium.webdriver.support.wait.POLL_FREQUENCY = 0.05

import re
import random
import collections

class AdwordsAutomater(object):

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# -*- coding=utf-8 -*-
import feedparser
import re
import collections
import math

def info_entropy(words):
    result = 0
    total = sum([val for _, val in words.iteritems()])
    for word, cnt in words.iteritems():