Design ad click event aggregation at scale — requirements, capacity, and trade-offs.
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hardSystem Design
How would you design ad click event aggregation?
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system-designcase-study
02
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03
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Design Ad Click Event Aggregation
Count clicks/impressions per ad per minute for billing, late events handled.
| Layer | Tech |
|---|---|
| Ingest | Kafka ad_clicks 100K/s |
| Window | Flink tumble 1m event-time + watermark 30s + allowed lateness 1m |
| Store | ClickHouse `AggregatingMerg |
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