nicholasklick

## System Design.md

      
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                nicholasklick
                / System Design.md
            
            
              Created
              May 19, 2021 03:24
                — forked from vasanthk/System Design.md
            
              
                System Design Cheatsheet
              
          
    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?


## keybase.md

      
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                nicholasklick
                / keybase.md
            
            
              Created
              September 19, 2018 15:16
            
          
    Keybase proof

I hereby claim:

I am nicholasklick on github.
I am nicholasklick (https://keybase.io/nicholasklick) on keybase.
I have a public key ASDkj-EhJftSCVxJmGF6UILetdY-JY7zyJvgP1XF9WDuXwo

To claim this, I am signing this object:

  
## gist:67101d48a15de4a69fc3b12f4439a472
# 'direct_v2/threads/broadcast/text/'


class InstagramPrivateController < ApplicationController

  def initialize(username, password, photo, caption)
    @username = username
    @password = password
    @photo = photo
    @caption = caption

## gist:ee779ecbd9bffe92d2c3

<!DOCTYPE html>
<head>
<meta charset='utf-8'>
<meta content='IE=edge,chrome=1' http-equiv='X-UA-Compatible'>
<title>Estimize Screener</title>
<meta content='width=device-width' name='viewport'>
<link rel="stylesheet" media="screen" href="/assets/application-2f24cb8405dcd79bb2b4219b527e9cc0.css" />
<!--[if IE 8]>
<link rel="stylesheet" media="screen" href="/assets/ie8-592b4f7c79840aa8093694c64ca1f73b.css" />

## spec_helper.rb
config.use_transactional_fixtures = false

config.before(:suite) do
  # Do truncation once per suite to vacuum for Postgres
  DatabaseCleaner.clean_with :truncation
  # Normally do transactions-based cleanup
  DatabaseCleaner.strategy = :transaction
end

config.around(:each) do |spec|

## chef-solo-vagrant-berkshelf.sh
# =====================
# INITIAL PROJECT SETUP
# =====================

#
# Create basic project directory
mkdir try-chef
cd try-chef

#

## ostruct.rb
#
# = ostruct.rb: OpenStruct implementation
#
# Author:: Yukihiro Matsumoto
# Documentation:: Gavin Sinclair
#
# OpenStruct allows the creation of data objects with arbitrary attributes.
# See OpenStruct for an example.
#

## project-web-reload.conf
# /etc/init/project-web-reload.conf

pre-start script
  initctl restart project-web
  sleep 15
end script

exec /usr/local/rvm/bin/default_bluepill restart

## Convert recursively all erb files in a directory to haml
#!/bin/bash
if [ -z "$1" ]; then
  wdir="."
else
  wdir=$1
fi

for f in $( find . -name '*erb' ); do
  out="${f%.erb}.haml"
  if [ -e $out ]; then

## gist:6887251
# Here's a sequence of numbers where each line is
# generated by semantically counting and printing the numbers
# in the previous line:
#
# 1
# 11
# 21
# 1211
# 111221
# 312211
	# 'direct_v2/threads/broadcast/text/'


	class InstagramPrivateController < ApplicationController

	def initialize(username, password, photo, caption)
	@username = username
	@password = password
	@photo = photo
	@caption = caption

	<!DOCTYPE html>
	<head>
	<meta charset='utf-8'>
	<meta content='IE=edge,chrome=1' http-equiv='X-UA-Compatible'>
	<title>Estimize Screener</title>
	<meta content='width=device-width' name='viewport'>
	<link rel="stylesheet" media="screen" href="/assets/application-2f24cb8405dcd79bb2b4219b527e9cc0.css" />
	<!--[if IE 8]>
	<link rel="stylesheet" media="screen" href="/assets/ie8-592b4f7c79840aa8093694c64ca1f73b.css" />
	config.use_transactional_fixtures = false

	config.before(:suite) do
	# Do truncation once per suite to vacuum for Postgres
	DatabaseCleaner.clean_with :truncation
	# Normally do transactions-based cleanup
	DatabaseCleaner.strategy = :transaction
	end

	config.around(:each) do \|spec\|
	# =====================
	# INITIAL PROJECT SETUP
	# =====================

	#
	# Create basic project directory
	mkdir try-chef
	cd try-chef

	#
	#
	# = ostruct.rb: OpenStruct implementation
	#
	# Author:: Yukihiro Matsumoto
	# Documentation:: Gavin Sinclair
	#
	# OpenStruct allows the creation of data objects with arbitrary attributes.
	# See OpenStruct for an example.
	#
	# /etc/init/project-web-reload.conf

	pre-start script
	initctl restart project-web
	sleep 15
	end script

	exec /usr/local/rvm/bin/default_bluepill restart
	#!/bin/bash
	if [ -z "$1" ]; then
	wdir="."
	else
	wdir=$1
	fi

	for f in $( find . -name '*erb' ); do
	out="${f%.erb}.haml"
	if [ -e $out ]; then
	# Here's a sequence of numbers where each line is
	# generated by semantically counting and printing the numbers
	# in the previous line:
	#
	# 1
	# 11
	# 21
	# 1211
	# 111221
	# 312211