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Design an Inventory Reservation System

Design an inventory reservation system for e-commerce. A user adds an item to the cart, and the system must temporarily reserve the stock to prevent overselling.

8,000 RPS
1,500,000 DAU
<100ms for reserve
SLA 99.95%

Components

Edge type

Hint

Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.

ArchCase

System Design

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