Real-time pipeline
You're building an app that applies real-time filters to the camera preview. It has to hold 60fps while staying memory safe (no buffer leaks, no contention). What thread and queue structure would you design for the capture, process, render pipeline?
SwiftUIShort answerBasics
In a SwiftUI List showing live prices, every price update makes rows flicker and reappear…
#realtime
iOS system designShort answerAdvanced
Design an infinite-scroll feed screen like Twitter's from the iOS client's point of view.…
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iOS system designMultiple choiceBasics
A stock app needs a watchlist screen (prices updating several times a second in the foreg…
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iOS system designShort answerAdvanced
Design a portfolio and watchlist screen where hundreds of symbols change price dozens of …
#realtime