Paul Murphy Mur3ph

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

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?

	// Enable component-scanning and auto-configuration with @SpringBootApplication Annotation
	// It combines @Configuration + @ComponentScan + @EnableAutoConfiguration
	@SpringBootApplication
	public class FooApplication {
	public static void main(String[] args) {
	// Bootstrap the application
	SpringApplication.run(FooApplication.class, args);
	}
	}

	//Get a new Stream that always calls the given function when a new value
	//is needed.
	def stream(): Source[Int, Unit] =
	Source(() => Iterator.continually(createValue()))

	//Just an example, could be anything
	def createValue(): Int = Random.nextInt()

	from Population import Population
	from Individual import Individual
	from random import random, randint

	class Algorithm():

	#Constants
	Uniform_rate = 0.5
	Mutation_rate = 0.015
	Tournament_size = 5

	#!/usr/bin/env python

	"""
	This Python code is based on Java code by Lee Jacobson found in an article
	entitled "Applying a genetic algorithm to the travelling salesman problem"
	that can be found at: http://goo.gl/cJEY1
	"""

	import math
	import random