“Since a few days, the Geo API has been introduced in Redis. At the time of writing, the work is quite complete but still considered in progress: everything you’ll read here is actually available in the unstable development branch and not yet released for production (plans are to release it with the next 3.2 version).
The Geo API consists of a set of new commands that add support for storing and querying pairs of longitude/latitude coordinates into Redis keys. GeoSet is the name of the data structure holding a set of
(x,y) coordinates. Actually, there isn’t any new data structure under the hood: a GeoSet is simply a Redis SortedSet…”