Carlo Pires carlopires

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?

How to securely test local/staging HTTPS project

Modern projects often support HTTPS and HTTP/2, moreover they can use Strict-Transport-Security: and Content-Security-Policy: headers which result in different behaviour for HTTP and HTTPS versions, or even completely forbid HTTP version. To develop and test such project locally, on CI, and at staging server we either have to provide a way to access it using HTTP in non-production environments (bad idea) or somehow make it work with HTTPS everywhere.

HTTP in non-production environments is a bad idea because we'll test not the same thing which will runs on production, and because there is a chance to occasionally keep HTTP enabled on production too.

HOWTO: Create Your Own Self-Signed Certificate with Subject Alternative Names Using OpenSSL in Ubuntu Bash for Window

Overview

My main development workstation is a Windows 10 machine, so we'll approach this from that viewpoint.

Recently, Google Chrome started giving me a warning when I open a site that uses https and self-signed certificate on my local development machine due to some SSL certificate issues like the one below:

	# -o- coding: utf-8 -o-
	# ISO639 python dict
	# oficial list in http://www.loc.gov/standards/iso639-2/php/code_list.php

	ISO639_2 = {
	'ab': 'Abkhaz',
	'aa': 'Afar',
	'af': 'Afrikaans',
	'ak': 'Akan',
	'sq': 'Albanian',

	bootstrap-tooltip.js
	bootstrap-popover.js
	bootstrap-alert.js
	bootstrap-button.js
	bootstrap-carousel.js
	bootstrap-collapse.js
	bootstrap-dropdown.js
	bootstrap-modal.js
	bootstrap-scrollspy.js
	bootstrap-tab.js

	from wsgiref.handlers import format_date_time

	import curio
	from curio import network
	from curio import socket
	from curio.io import Socket

	import h11
	import tls

	require("lsqlite3")

	-- Igmar: Wanneer closen we dat DB object eigenlijk ?
	db = sqlite3.open('/etc/asterisk/users.sqlite')

	--CONSOLE = "Console/dsp" -- Console interface for demo
	--CONSOLE = "DAHDI/1"
	--CONSOLE = "Phone/phone0"

	TRUNK = "DAHDI/G1"

	class Graph:
	def __init__(self):
	self.nodes = set()
	self.edges = defaultdict(list)
	self.distances = {}

	def add_node(self, value):
	self.nodes.add(value)

	def add_edge(self, from_node, to_node, distance):

	from collections import defaultdict, deque


	class Graph(object):
	def __init__(self):
	self.nodes = set()
	self.edges = defaultdict(list)
	self.distances = {}

	def add_node(self, value):


	'''
	rate_limit2.py

	Copyright 2014, Josiah Carlson - [email protected]
	Released under the MIT license

	This module intends to show how to perform standard and sliding-window rate
	limits as a companion to the two articles posted on Binpress entitled
	"Introduction to rate limiting with Redis", parts 1 and 2: