Geo / 地理位置

• GEOADD key longitude latitude member [longitude latitude member …]
• GEODIST key member1 member2 [unit]
• GEOHASH key member [member …]
• GEOPOS key member [member …]
• GEORADIUS key longitude latitude radius m|km|ft|mi [WITHCOORD] [WITHDIST] [WITHHASH] [ASC|DESC] [COUNT count]
• GEORADIUSBYMEMBER key member radius m|km|ft|mi [WITHCOORD] [WITHDIST] [WITHHASH] [ASC|DESC] [COUNT count]