System Design · Meta · Hard
Requirements Core capabilities: create an auction listing, submit offers, stream current-price changes immediately, close the auction, and select the winning bidder. Key design choices: Bid intake: route messages through pub/sub partitions keyed by auction_id, which preserves bid order within each auction. Live notifications: favor SSE for the one-directional stream of bidding events rather than WebSocket; explain the trade-off. Auction completion: run a scheduled task when…
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