Design systems that process petabytes of data and deliver insights in real-time
Design Google Analytics handling 100B events/day with real-time dashboards, funnel analysis, user segmentation, and sub-second query latency.
Design Datadog-like monitoring with metric collection, time-series storage, alerting rules, service discovery, and dashboard visualization.
Design an ELK-like system ingesting 1M logs/second with full-text search, structured parsing, index lifecycle management, and retention policies.
Design real-time ad click tracking with exactly-once billing, fraud detection, deduplication, and processing 10M clicks/second.
Design a system finding trending items from billions of events using Count-Min Sketch, Space-Saving algorithm, and multiple time windows.