System Design for Apple Platforms Questions
Architectural patterns and system design considerations for building software on Apple platforms (iOS, macOS, watchOS, tvOS). Includes architecture styles (MVC, MVVM, VIPER, Clean Architecture), data flow and separation of concerns, offline caching and synchronization, caching strategies, performance optimization, platform constraints, and patterns for scalable, maintainable Apple ecosystem applications.
HardSystem Design
0 practiced
Design a client-side cache invalidation strategy when backend data changes frequently. Discuss ETag/If-None-Match usage, short TTLs, push-based invalidation via APNs, and optimistic UI updates. Explain how to balance staleness and network/battery cost on Apple devices.
MediumSystem Design
0 practiced
Design a strategy and API for performing server-side A/B experiments for an iOS app where feature rollout and analytics must support offline usage. Describe local bucketing, remote evaluation, event buffering, and how to reconcile experiment assignments when the device reconnects.
MediumSystem Design
0 practiced
Design a feature-flag system for an iOS app integrated with a distributed backend that supports targeting by user segments, low-latency evaluation for startup paths, and safe defaults when the flag service is unreachable. Include the SDK surface and server-side considerations.
MediumTechnical
0 practiced
Compare CloudKit vs a custom backend for syncing user data across Apple devices. Discuss trade-offs in privacy, scalability, cross-platform support, offline behavior, subscription/push capabilities, and operational burden.
EasyTechnical
0 practiced
Describe the iOS app lifecycle and background execution constraints across iOS, macOS, and watchOS. Explain what platform APIs exist for background work (Background App Refresh, BGProcessingTask, URLSession background, WatchKit complications) and typical limitations a developer must design around.
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