Geospatial Data and Querying Questions

Explore how to store index partition and query location based data at scale. Topics include spatial data types and spatial libraries, spatial indexing techniques and tree structures for range and nearest neighbor queries, geohash and tile based partitioning, coordinate reference systems and projection issues, and distance calculation methods. Candidates should describe query patterns for common geospatial use cases such as nearest neighbor search geofencing route matching and area aggregations, and explain trade offs between accuracy latency and storage cost as well as approaches to caching map tiles and handling moving entities.