In-app notification center
Design the "notifications" tab of a commerce app: a list of order, promotion, and shipping notifications, read/unread state, and a badge. Focus on local storage and syncing read state with the server.
iOS system designShort answerAdvanced
Design an infinite-scroll feed screen like Twitter's from the iOS client's point of view.…
#pagination
iOS system designShort answerBasics
For a mobile feed, would you paginate by offset or by cursor (keyset)? Justify it with th…
#pagination
iOS system designMultiple choiceBasics
You're loading a feed with offset pagination. While the user is reading page 2, 3 new pos…
#pagination
iOS system designShort answerAdvanced
Design the client for a money transfer app's transaction history screen. Requirements: in…
#pagination