Two kitchens, two cities
Two cities changed the same order a moment apart. Which change survives, and what did it cost to be sure?
Read the lesson behind this Two kitchens, two cities (multi-region and active-active)Preparing for interviews? The ten-week plan puts this in order with DSA and the design rounds.
Two kitchens in two cities each keep their own book of orders. A customer in the east pays by card, and a partner in the west switches the same order to cash a moment later. The tabs set what the kitchens do about it. Watch the wait per write against the wrong changes kept.
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the lesson Two kitchens, two cities (multi-region and active-active)
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on the path Module 2 of 29 in System Design: When the stalls must agree
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Board: The Cut Phone Line