Returns members from a geospatial index that are within a distance from a coordinate.
GEORADIUS_RO key longitude latitude radius <M | KM | FT | MI> [WITHCOORD] [WITHDIST] [WITHHASH] [COUNT count [ANY]] [ASC | DESC]
Read-only variant of the GEORADIUS command.
This command is identical to the GEORADIUS command, except that it doesn’t support the optional STORE and STOREDIST parameters.
One of the following:
If no WITH* option is specified, an Array reply of matched member names
If WITHCOORD, WITHDIST, or WITHHASH options are specified, the command returns an Array reply of arrays, where each sub-array represents a single item:
The distance from the center as a floating point number, in the same unit specified in the radius.
The Geohash integer.
The coordinates as a two items x,y array (longitude,latitude).
O(N+log(M)) where N is the number of elements inside the bounding box of the circular area delimited by center and radius and M is the number of items inside the index.
@geo @read @slow
ANY option for COUNT.GEOSEARCH with the BYRADIUS argument.GEOADD, GEODIST, GEOHASH, GEOPOS, GEOSEARCH, GEOSEARCHSTORE.