Mikhail Kuznetcov shershen08

MySQL

Getting started

Two way iframe communication

The main difference between the two pages is the method of sending messages. Recieving messages is the same in both.

Parent

Send messages to iframe using iframeEl.contentWindow.postMessage Recieve messages using window.addEventListener('message')

iframe

Most configuration really isn't about the app -- it's about where the app runs, what keys it needs to communicate with third party API's, the db password and username, etc... They're just deployment details -- and there are lots of tools to help manage environment variables -- not the least handy being a simple .env file with all your settings. Simply source the appropriate env before you launch the app in the given env (you could make it part of a launch script, for instance).

env files look like this:

SOMEVAR="somevalue"
ANOTHERVAR="anothervalue"

To source it:

$ source dev.env # or staging.env, or production.env, depending on where you're deploying to

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

1. Clone your fork:

git clone [email protected]:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

	var db = mongoose.connect('mongodb://localhost:27017/DB');

	// In middleware
	app.use(function (req, res, next) {

	// action after response
	var afterResponse = function() {
	logger.info({req: req}, "End request");

	// any other clean ups

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Blank HTML5</title>
	<style>
	</style>
	</head>
	<body>

	[
	{"group":"US (Common)",
	"zones":[
	{"value":"America/Puerto_Rico","name":"Puerto Rico (Atlantic)"},
	{"value":"America/New_York","name":"New York (Eastern)"},
	{"value":"America/Chicago","name":"Chicago (Central)"},
	{"value":"America/Denver","name":"Denver (Mountain)"},
	{"value":"America/Phoenix","name":"Phoenix (MST)"},
	{"value":"America/Los_Angeles","name":"Los Angeles (Pacific)"},
	{"value":"America/Anchorage","name":"Anchorage (Alaska)"},

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	/*
	* This work is free. You can redistribute it and/or modify it under the
	* terms of the Do What The Fuck You Want To Public License, Version 2,
	* as published by Sam Hocevar. See the COPYING file for more details.
	*/
	/*
	* Easing Functions - inspired from http://gizma.com/easing/
	* only considering the t value for the range [0, 1] => [0, 1]
	*/
	EasingFunctions = {