Adam Watson adamlwatson

Setting up Sinatra Project

create an empty project and add a Gemfile

cd ~/Desktop
mkdir project-name
cd project-name
touch Gemfile

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	aaron,erin,ron,ronnie
	abel,ab,abe,eb,ebbie
	abiel,ab
	abigail,abby,gail,gail,nabby
	abner,ab
	abraham,ab,abe
	abram,ab
	adaline,ada,addy,delia,dell,lena
	adelaide,addy,adele,dell,della,heidi
	adeline,ada,addy,delia,dell,lena

	#!/usr/bin/env bash

	uninstall() {
	list=`gem list --no-versions`
	for gem in $list; do
	gem uninstall $gem -aIx
	done
	gem list
	gem install bundler
	}

	# ...
	gem 'sidekiq'
	# ...