Cross-screen state consistency
When the user double-taps to like a post in the Instagram detail screen, the same post in the feed, on the profile, and in search results all have to update immediately. Walk me through how that event flows through the architecture layers.
iOS system designShort answerBasics
How is an "offline-first" app architecture different from the usual "network first, fall …
#single-source-of-truth
iOS system designMultiple choiceBasics
The system design round is "design an app with just two screens, a list and a detail." Wh…
#architecture
ArchitectureShort answerBasics
Besides MVVM, walk me through the architectures you know (MVP, VIPER, MVI, RIBs, and so o…
#viper
ArchitectureShort answerAdvanced
This is a whiteboard design. You're building a stripped-down Outlook app with only a Mess…
#single-source-of-truth