exAspArk

## vault.sh
# Install https://www.vaultproject.io/
brew install vault

# Start dev vault server in a separate terminal
vault server -dev
# ==> Vault server configuration:
# ...
# Unseal Key: 7ACQHhLZY5ivzNzhMruX9kSa+VXCah3y87hl3dPSWFk=
# Root Token: 858a6658-682e-345a-e4c4-a6e14e6f7853

## memory_middleware.rb
class MemoryMiddleware
  ENV_REQUEST_PATH = 'REQUEST_PATH'.freeze
  ENV_PUMA_AFTER_REPLY = 'rack.after_reply'.freeze
  LOGGER = Logger.new('/tmp/memory.log'.freeze)

  def initialize(app)
    @app = app
  end

  def call(env)

## my top ZSH commands
(export LC_ALL="ru" ; awk '{split($0,l,";") ; print l[2],l[3],l[4]}' ~/.zsh_history | sort | uniq -c | sort -nr | head -n 20)

## http_socket.rb
require "net/http"
require "socket"

socket = "/tmp/portal2.sock"

sock = Net::BufferedIO.new(UNIXSocket.new(socket))
request = Net::HTTP::Get.new("/")
request.exec(sock, "1.1", "/")

begin

## Gemfile
source 'https://rubygems.org'

gem 'puma'

gem 'sinatra'

gem 'faraday'
gem 'typhoeus'

group :development do

## The Technical Interview Cheat Sheet.md

      
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                exAspArk
                / The Technical Interview Cheat Sheet.md
            
            
              Created
              January 20, 2016 11:11
                — forked from tsiege/The Technical Interview Cheat Sheet.md
            
              
                This is my technical interview cheat sheet. Feel free to fork it or do whatever you want with it. PLEASE let me know if there are any errors or if anything crucial is missing. I will add more links soon.
              
          
    Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics.  It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth.  It also will be available as a gist on Github for everyone to edit and add to.
Data Structure Basics

###Array
####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.


## gist:42bdb62751a9300ee6d7
ssh login@server.example.com -t "screen -DR session_name"

tmux -CC attach -t session_name || tmux -CC new -s session_name

## gist:c325bb9a75dcda5c8212
# The same algorithm which is used in Google Analytics (https://support.google.com/analytics/answer/2731565?hl=en):
# Time-based expiry (including end of day):
# - After 30 minutes of inactivity
# - At midnight

# Enable dynamic scripting for Groovy (https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-scripting.html#_enabling_dynamic_scripting)
# ! WARNING: please read about security first

# Usage:
#

## bench_rails_memory_usage.rb
require "net/http"

def start_server
  # Remove the X to enable the parameters for tuning.
  # These are the default values as of Ruby 2.2.0.
  @child = spawn(<<-EOC.split.join(" "))
    XRUBY_GC_HEAP_FREE_SLOTS=4096
    XRUBY_GC_HEAP_INIT_SLOTS=10000
    XRUBY_GC_HEAP_GROWTH_FACTOR=1.8
    XRUBY_GC_HEAP_GROWTH_MAX_SLOTS=0

## ruby_heart_print.rb
ruby_print = ->(a, b = 28, c = 1) { puts ("ruby" * a).center(b) * c } ; [[2, 14, 2], [3, 14, 2], 7, 7, 7, 6, 5, 4, 3, 2, 1].map { |i| ruby_print.call(*i) }

   rubyruby      rubyruby
 rubyrubyruby  rubyrubyruby
rubyrubyrubyrubyrubyrubyruby
rubyrubyrubyrubyrubyrubyruby
rubyrubyrubyrubyrubyrubyruby
  rubyrubyrubyrubyrubyruby
    rubyrubyrubyrubyruby
      rubyrubyrubyruby
	# Install https://www.vaultproject.io/
	brew install vault

	# Start dev vault server in a separate terminal
	vault server -dev
	# ==> Vault server configuration:
	# ...
	# Unseal Key: 7ACQHhLZY5ivzNzhMruX9kSa+VXCah3y87hl3dPSWFk=
	# Root Token: 858a6658-682e-345a-e4c4-a6e14e6f7853
	class MemoryMiddleware
	ENV_REQUEST_PATH = 'REQUEST_PATH'.freeze
	ENV_PUMA_AFTER_REPLY = 'rack.after_reply'.freeze
	LOGGER = Logger.new('/tmp/memory.log'.freeze)

	def initialize(app)
	@app = app
	end

	def call(env)
	require "net/http"
	require "socket"

	socket = "/tmp/portal2.sock"

	sock = Net::BufferedIO.new(UNIXSocket.new(socket))
	request = Net::HTTP::Get.new("/")
	request.exec(sock, "1.1", "/")

	begin
	source 'https://rubygems.org'

	gem 'puma'

	gem 'sinatra'

	gem 'faraday'
	gem 'typhoeus'

	group :development do
	ssh login@server.example.com -t "screen -DR session_name"

	tmux -CC attach -t session_name \|\| tmux -CC new -s session_name
	# The same algorithm which is used in Google Analytics (https://support.google.com/analytics/answer/2731565?hl=en):
	# Time-based expiry (including end of day):
	# - After 30 minutes of inactivity
	# - At midnight

	# Enable dynamic scripting for Groovy (https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-scripting.html#_enabling_dynamic_scripting)
	# ! WARNING: please read about security first

	# Usage:
	#
	require "net/http"

	def start_server
	# Remove the X to enable the parameters for tuning.
	# These are the default values as of Ruby 2.2.0.
	@child = spawn(<<-EOC.split.join(" "))
	XRUBY_GC_HEAP_FREE_SLOTS=4096
	XRUBY_GC_HEAP_INIT_SLOTS=10000
	XRUBY_GC_HEAP_GROWTH_FACTOR=1.8
	XRUBY_GC_HEAP_GROWTH_MAX_SLOTS=0
	ruby_print = ->(a, b = 28, c = 1) { puts ("ruby" * a).center(b) * c } ; [[2, 14, 2], [3, 14, 2], 7, 7, 7, 6, 5, 4, 3, 2, 1].map { \|i\| ruby_print.call(*i) }

	rubyruby rubyruby
	rubyrubyruby rubyrubyruby
	rubyrubyrubyrubyrubyrubyruby
	rubyrubyrubyrubyrubyrubyruby
	rubyrubyrubyrubyrubyrubyruby
	rubyrubyrubyrubyrubyruby
	rubyrubyrubyrubyruby
	rubyrubyrubyruby