advancedReal System Design Problems34 of 132
Design an Ad Serving System — real-time auction and targeting in milliseconds.
The real-time-auction-and-targeting problem: how ads are selected and ranked within a strict millisecond budget, how targeting criteria are matched against user attributes at scale, and how impression/click events are collected reliably enough to be trusted for billing.
Ready to design this system end to end?
Generate a complete, structured system design answer — requirements, capacity estimation, API design, architecture, database choice, scaling, caching, fault tolerance, security, trade-offs, and more, walked through the way a strong senior engineer would in a real interview.
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