Aleix Ramírez Baena aleixrm

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

Clarify and agree on the scope of the system

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

	import os
	import posixpath
	import logging
	import paramiko
	from pathlib import Path
	from typing import List

	logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
	logger = logging.getLogger(__name__)

	Windows Registry Editor Version 5.00
	; Default color scheme
	; for Windows command prompt.

	; Values stored as 00-BB-GG-RR
	[HKEY_CURRENT_USER\Console]
	; BLACK DGRAY
	"ColorTable00"=dword:00000000
	"ColorTable08"=dword:00808080
	; BLUE LBLUE