Harry Isidore devdbrandy

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?

Markdown License badges

Collection of License badges for your Project's README file.
This list includes the most common open source and open data licenses.
Easily copy and paste the code under the badges into your Markdown files.

Notes

The badges do not fully replace the license informations for your projects, they are only emblems for the README, that the user can see the License at first glance.

Translations: (No guarantee that the translations are up-to-date)

🇫🇷 Cette liste en français

STEPS

Click on Help menu
Select Enter License
Then paste given KEY given at bottom
Finally click on Use License

Installing Postgres via Brew

Pre-Reqs

Brew Package Manager

In your command-line run the following commands:

brew doctor
brew update

Sequelize + Express Starter Guide

Based off of: http://docs.sequelizejs.com/en/1.7.0/articles/express/

Create your project directory

Create and initialize your a directory for your Express application.

$ mkdir sequelize-demo

	// A common redux pattern when dealing with async functions is to use thunk.
	// This usually means your action returns a new function instead of an action object,
	// and the thunk middleware will make it all work. Example:
	const asyncAction = () => dispatch => setTimeout(() => dispatch(someOtherAction()), 10000);

	// Now: maybe that async stuff going on is calling some API which you don't want to overload
	// with request, and that's what debounce is for.
	// This is an example of a debounced function which will only be calleable once every second.
	import { debounce } from 'lodash';
	const debouncedFn = debounce(() => callApi(), 1000, { leading: true, trailing: false });

	{
	"presets": ["es2015"],
	"plugins": [
	"add-module-exports"
	],
	}

	<?php

	// This can be found in the Symfony\Component\HttpFoundation\Response class

	const HTTP_CONTINUE = 100;
	const HTTP_SWITCHING_PROTOCOLS = 101;
	const HTTP_PROCESSING = 102; // RFC2518
	const HTTP_OK = 200;
	const HTTP_CREATED = 201;
	const HTTP_ACCEPTED = 202;

	/* Closure */
	const buttons = document.getElementsByClassName('three-buttons');
	for (var i = 0; i < 3; i++) {
	buttons[i].addEventListener(function(){
	console.log(i)
	});
	}
	// Click 1st button -> 2
	// Click 2nd button -> 2
	// Click 3rd button -> 2