GEORADIUSBYMEMBER

Queries a geospatial index for members within a distance from a member, optionally stores the result.

Usage: GEORADIUSBYMEMBER key member radius unit [WITHCOORD withcoord] [WITHDIST withdist] [WITHHASH withhash] [count-block] [order] [store]
Complexity: 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.
Since: 3.2.0
ACL Categories: @geo, @slow, @write
Command flags: WRITE, DENYOOM

This command is exactly like GEORADIUS with the sole difference that instead of taking, as the center of the area to query, a longitude and latitude value, it takes the name of a member already existing inside the geospatial index represented by the sorted set.

The position of the specified member is used as the center of the query.

Please check the example below and the GEORADIUS documentation for more information about the command and its options.

Note that GEORADIUSBYMEMBER_RO was added to provide a read-only command that can be used in replicas. See the GEORADIUS page for more information.

Alternative

GEOSEARCH and GEOSEARCHSTORE with the BYRADIUS and FROMMEMBER arguments.

Examples

127.0.0.1:6379> GEOADD Sicily 13.583333 37.316667 "Agrigento"
(integer) 1
127.0.0.1:6379> GEOADD Sicily 13.361389 38.115556 "Palermo" 15.087269 37.502669 "Catania"
(integer) 2
127.0.0.1:6379> GEORADIUSBYMEMBER Sicily Agrigento 100 km
1) "Agrigento"
2) "Palermo"

Replies

RESP2

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).

RESP3