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geohash S2 H3 system design articles

Focused reading for candidates preparing stronger examples, sharper technical stories, and more credible interview answers.

System Design11 min read

How to Store Constantly Changing Location Data at Uber Scale

How an Uber-style city map teaches you to separate live location, recent movement, and historical trails before the database melts

A story-driven system design guide to storing live location updates for millions of moving users per second, covering ingestion, geospatial indexing, hot data, cold history, queues, databases, and failure handling.

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