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• System Design in Software Development

• The Lost Art of System Design - John Sundell, Swift & Fika 2018

• Grokking the Mobile System Design interview

• Mobile System Design Interviews (iOS and Android)

• How to Succeed in a System Design Interview

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Architecture

• Doordash mobile architecture
• Evernote rewrite mobile app
• Scaling up an iOS app using modules

Offline Sync and Cache

• Dropbox photo offline sync
• Airbnb message sync
• Netflix download
• Trello offline works
• Expedia API cache

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Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

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System Design Cheatsheet

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

Basic Steps

1. 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?

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import UIKit
import StoreKit

//MARK: SKProductsRequestDelegate

extension IAPHelpers : SKProductsRequestDelegate
{
    func productsRequest(request: SKProductsRequest, didReceiveResponse response: SKProductsResponse)
    {

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Options All -Indexes

DirectoryIndex index.php index.htm index.html

RewriteEngine on
RewriteBase /

# Force HTTPS on the subdomains/subdirectories login or admin
#RewriteCond %{HTTPS} off
#RewriteCond %{HTTP_HOST} ^(login|admin)\. [NC]

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$ wget http://downloads.sourceforge.net/project/glfw/glfw/3.0.1/glfw-3.0.1.zip
$ unzip glfw-3.0.1.zip
$ cd glfw-3.0.1/
$ mkdir build
$ cd build
$ export MACOSX_DEPLOYMENT_TARGET=10.8 
$ cmake -D GLFW_NATIVE_API=1 -D CMAKE_OSX_ARCHITECTURES="i386;x86_64" -D BUILD_SHARED_LIBS=ON -D CMAKE_C_COMPILER=clang ../
$ make
$ ls -l src/libglfw*

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#import <UIKit/UIKit.h>
#import <ImageIO/ImageIO.h>
#import <MobileCoreServices/MobileCoreServices.h>

- (void)exportAnimatedGif
{
    UIImage *shacho = [UIImage imageNamed:@"shacho.png"];
    UIImage *bucho = [UIImage imageNamed:@"bucho.jpeg"];
    
    NSString *path = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"animated.gif"];

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#import <UIKit/UIKit.h>
#import <ImageIO/ImageIO.h>
#import <MobileCoreServices/MobileCoreServices.h>

static UIImage *frameImage(CGSize size, CGFloat radians) {
    UIGraphicsBeginImageContextWithOptions(size, YES, 1); {
        [[UIColor whiteColor] setFill];
        UIRectFill(CGRectInfinite);
        CGContextRef gc = UIGraphicsGetCurrentContext();
        CGContextTranslateCTM(gc, size.width / 2, size.height / 2);