All 7 Geospatial Data in Redis questions
More in Geospatial Data in Redis
How do you find the distance between two stored locations in Redis? How do you find all stored locations within a certain radius of a specific point using Redis? How can you retrieve the actual stored coordinates for a specific member in a Redis geospatial dataset? How do you remove a specific location from a Redis geospatial dataset once it is no longer needed? How would you design a real time location tracking system for a fleet of delivery vehicles using Redis geospatial commands? What is the underlying geohash based encoding that Redis uses to store geospatial data, and how does it affect the accuracy of location queries?
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What geospatial capabilities does Redis provide, and what commands are used to add location data?

Beginner

Answer

Redis lets you store geographic coordinates, meaning longitude and latitude, associated with a member name using the GEOADD command, which internally stores this location data using a sorted set, allowing you to later perform location based queries like finding nearby points or calculating distances.
GEOADD locations -122.4194 37.7749 'San Francisco'
GEOADD locations -73.9857 40.7484 'New York'
Real-world example A delivery tracking application stores the current location of each delivery driver using GEOADD, updating their coordinates as they move throughout the day.

Common follow-ups: What data structure does Redis actually use internally to store geospatial data?;Can you update an existing member's location using GEOADD again?

Sets & Sorted Sets in Redis;Data Types
All 7 Geospatial Data in Redis questions