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TitleBestDifficulty
Design a Key-Value StoreEasy
Design a PastebinEasy
Design a View CounterEasy
Design Search AutocompleteEasy
Design a Rate LimiterEasy
Design a Feature Flag ServiceEasy
Design an Online Presence ServiceEasy
Design a URL ShortenerMedium
Design an Image Hosting ServiceMedium
Design a Product CatalogMedium
Design a Session StoreMedium
Design a Gaming LeaderboardMedium
Design a News Aggregator Front PageMedium
Design Ride-Hailing Location TrackingMedium
Design a Payment LedgerMedium
Design a Ticket Booking SystemHard
Design a Social FeedHard
Design a Chat Message StoreHard
Design a Metrics Ingestion StoreHard
Design Video Streaming DeliveryHard
Design a Web CrawlerHard
Design an API GatewayHard