Hld
System Design
Medium
FloodWatch: IoT Urban Alert System
Design a system to ingest telemetry from 10 million water-level sensors across 500 cities. The system must detect potential flooding using ML-based thresholding in real-time and trigger push notifications to residents in affected 1km x 1km grid squares within 30 seconds of an event.
Key concepts
stream processingtime-series datageospatial indexing
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