Overview
The article discusses the comprehensive re-architecture of Pinterest's iOS app, emphasizing performance improvements, the adoption of AsyncDisplayKit for asynchronous UI rendering, and the implementation of immutable data models. It highlights the team's efforts to enhance user experience while preparing for a global audience.
What You'll Learn
1
How to leverage multithreading to improve app performance
2
Why using AsyncDisplayKit can enhance UI responsiveness
3
How to implement immutable data models for thread safety
4
When to apply a new design language for device agnostic layouts
Prerequisites & Requirements
- Understanding of multithreading concepts
- Familiarity with AsyncDisplayKit(optional)
- Experience in iOS development
Key Questions Answered
What performance improvements were achieved in the new iOS app?
The re-architected Pinterest iOS app achieved up to 3x faster performance in various scenarios, with 10x improvements in touch responsiveness and scrolling smoothness. This was accomplished through multithreaded code and optimizations in UI rendering and model processing.
How does AsyncDisplayKit enhance UI rendering?
AsyncDisplayKit allows for asynchronous rendering of the UI, enabling expensive layout and rendering tasks to be processed off the main thread. This results in smoother scrolling and improved responsiveness, particularly beneficial for users on older devices.
What are the benefits of using immutable data models?
Immutable data models ensure thread safety and reduce complexity in the app's architecture. By generating models from JSON files, the team improved performance and reduced crashes associated with multi-threaded modifications.
What new design language was implemented in the app?
The new design language, referred to as 'boints', simplifies the app's layout for multiple device sizes. It automatically scales fonts and margins based on screen size and language, enhancing the user experience across different regions.
Key Statistics & Figures
Performance improvement
up to 3x faster
This improvement was noted in various scenarios after the re-architecture of the app.
Touch responsiveness improvement
10x improvements
This was achieved through the implementation of multithreaded code.
Technologies & Tools
Frontend
Asyncdisplaykit
Used for asynchronous UI rendering to enhance performance and responsiveness.
Key Actionable Insights
1Implement multithreading in your iOS applications to enhance performance and responsiveness.By distributing tasks across multiple threads, you can significantly improve user interactions, especially in apps that require smooth scrolling and quick touch responses.
2Adopt AsyncDisplayKit for handling complex UI rendering tasks asynchronously.This framework allows for smoother user experiences by offloading heavy rendering tasks from the main thread, which is crucial for maintaining performance on older devices.
3Transition to immutable data models to simplify state management and improve thread safety.Immutable models help prevent crashes and make it easier to reason about state changes in your application, which is especially beneficial in multi-threaded environments.
Common Pitfalls
1
Failing to ensure thread safety when modifying data models can lead to crashes.
This often occurs when developers attempt to modify models on background threads without proper synchronization, which can compromise application stability.
Related Concepts
Multithreading In Ios Development
Asynchronous Programming Patterns
Immutable Data Structures