Eugene Yagrushkin jeksys

#System Design Interview Cheatsheet

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

##Basic Steps

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?

	# Copyright (c) 2020 Eugene Berdnikov
	#
	# Permission is hereby granted, free of charge, to any person obtaining a copy
	# of this software and associated documentation files (the "Software"), to deal
	# in the Software without restriction, including without limitation the rights
	# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	# copies of the Software, and to permit persons to whom the Software is
	# furnished to do so, subject to the following conditions:
	#
	# The above copyright notice and this permission notice shall be included in all

	//
	// ExtensionURLRequest.swift
	//
	// Created by Abhishek Maurya on 16/07/20.
	// Copyright © 2020. All rights reserved.
	//

	import Foundation

	extension URLRequest {

	#if DEBUG
	import SwiftUI

	private let screenshotDirectory = "/Users/inket/Desktop/"

	struct PreviewScreenshot: ViewModifier {
	struct LocatorView: UIViewRepresentable {
	let tag: Int

	func makeUIView(context: Context) -> UIView {

	import PlaygroundSupport
	import Foundation

	struct Resource<A> {
	var request: URLRequest
	var parse: (Data) throws -> A
	}

	protocol Loadable {
	static var request: URLRequest { get }

	func fetchResultsFromApi() {
	struct MyGitHub: Codable {

	let name: String?
	let location: String?
	let followers: Int?
	let avatarUrl: URL?
	let repos: Int?

	private enum CodingKeys: String, CodingKey {

Editors

	//: Playground - noun: a place where people can play

	import Foundation

	final class Disposable {
	private let dispose: () -> ()
	init(_ dispose: @escaping () -> ()) {
	self.dispose = dispose
	}

	import Foundation
	import PlaygroundSupport

	/// A thread-safe array.
	public class SynchronizedArray<Element> {
	private let queue = DispatchQueue(label: "io.zamzam.ZamzamKit.SynchronizedArray", attributes: .concurrent)
	private var array = [Element]()

	public init() { }

	//
	// UserInfoCell.swift
	//
	// Created by Mathias Claassen on 30/8/16.
	// Copyright © 2016 Xmartlabs. All rights reserved.
	//

	import Foundation
	import Eureka