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Carnival Concession Inventory
Also known as: Perishable Inventory with FEFO
You're managing perishable inventory where items expire—and the oldest expiring stock must sell first. The twist is events arrive out of order, so you need to reconstruct the timeline before allocating. A great intro to priority-based resource management with a fun carnival framing.
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Low-Level Design Interview Questions
Low-level design problems test whether you can model a small API, preserve invariants, and choose storage that matches the required operations. Expect recurring shapes like rate limiters, hit counters, tic-tac-toe, file systems, and autocomplete.
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