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Building mobile apps at scale, NSSpain - 2018
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Engineering
Most well known mobile architectures start to work against you after your engineering team grows large. A new architecture paradigm is needed to support the development of mobile applications with hundreds of mobile engineers. At Uber, we’ve been through this journey, growing from one mobile developer to hundreds. After investigating many other mobile architectures, we created RIBs: a platform-agnostic mobile architecture designed with reliability, testability, isolation and maintainability in mind. We re-wrote the Uber application in 4 months with 200 engineers. Recording of the talk: https://vimeo.com/292733041
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Building mobile apps at scale, NSSpain - 2018
- Building mobile apps at scale Pavel Mazurin, Victor Pena Software Engineers, iOS
- engineers502
- Why What How
- Why History Goals of the rewrite
- Initial Team
- Team Growth
- Hundreds of mobile engineers? Request a ride Fare split Cash Uber for Business Credit card rewards points Promotions Promotions Safety Digital Payments Scheduled rides Drive for Uber Uber Eats, Freight, Self-driving vehicles... Experimentation 65 countries, 600 cities Performance Cash Instant payments Maps & navigation uberPOOL Driver incentives App health Developer tools Networking Feed cards Driver experience Driver recognition Airport pickup Uber Family Beacon Campaigns Fraud Courier experience Shipper experience Restaurant experience
- App Growth
- App Growth
- Architecture Growth ProductSelection Controller Menu Controller Custom View Custom View Sub Controller Location Controller ProductSelection Controller Menu Controller Location Controller LoggedIn Controller
- Architecture Growth ProductSelection Controller Menu Controller Custom View Custom View Sub Controller LoggedIn Controller Location Controller ...
- ... Architecture Growth ProductSelection Controller Menu Controller Custom View Custom View Sub Controller LoggedIn Controller Location Controller
- Architecture Growth Custom View Custom View Sub Controller ... ProductSelection Controller Menu Controller Location Controller ...... ProductSelection Controller Menu Controller Location Controller LoggedIn Controller LoggedIn Controller
- Let’s just change everything
- Why History Goals of the rewrite
- 99.99% reliability of core flows Isolation & testability Support continued growth for years Cross platform architecture Rewrite Goals
- August Rewriting the Uber App January '16 June November Core architecture, framework & tooling Core flow Everything else
- RIBs Architecture What We Built Application Framework Scoping Routing Business-logic driven Dependency management Open source Monitoring Components Code generation Reactive data flows Testability Experimentation Plugins Networking Storage Location services Analytics Logging UI components
- Why What How
- What Application state Designing RIBs
- The state management problem
- State Tree Root LoggedInLoggedOut Onboarding Menu ... FeedCard Location Editor Shortcuts Home RequestOnTrip
- State transitions State Tree Root Backend Login request Session response LoggedInLoggedOutLoggedOut
- What Application state Designing RIBs
- Popular Mobile Architectures MVC, MVP, MVVM VIPER
- View tree drives the app hierarchy MVC, MVP, MVVM & VIPER
- Router Interactor Builder RIBs Presenter View
- RIBs View model UI event Data model Business logic calls Routing calls Builder Interactor PresenterRouter View Returns Activates
- State Tree Root LoggedIn LoggedOu t Onboarding MenuOnTrip ... Request FeedCard Location Editor Shortcuts FeedCard Location Editor Shortcuts Menu Home LoggedOut Request Home
- Demo
- HowWhy What
- RIBs at Uber Rider app: ~650 RIBs ~300 lines of code per class Unit tests Other apps migrating
- Thank you Pavel Mazurin, Victor Pena Software Engineers, iOS uber.github.io eng.uber.com Proprietary © 2018 Uber Technologies, Inc. All rights reserved. No part of this document may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval systems, without permission in writing from Uber. This document is intended only for the use of the individual or entity to whom it is addressed. All recipients of this document are notified that the information contained herein includes proprietary information of Uber, and recipient may not make use of, disseminate, or in any way disclose this document or any of the enclosed information to any person other than employees of addressee to the extent necessary for consultations with authorized personnel of Uber.
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