System design interview question
"Design a restaurant reservation system. Diners search for a table for four at 8pm on Friday; restaurants have a small number of tables of different sizes; and — the interesting part — tables can be combined, and a booking occupies a table for an uncertain duration. 100,000 restaurants."
small, heterogeneous inventory with a soft duration, which is genuinely different from rooms or seats. Two distinctive hard parts: a party of four can be seated at one four-top or two two-tops pushed together, so availability is a packing problem; and the meal length is unknown, so an occupancy model must be estimated rather than booked.
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