Bitmap
SETBIT key offset value
GETBIT key offset
BITCOUNT key [ start end [ BYTE | BIT]]
BITOP AND destkey srckey1 srckey2 srckey3 ... srckeyN
BITOP OR destkey srckey1 srckey2 srckey3 ... srckeyN
BITOP XOR destkey srckey1 srckey2 srckey3 ... srckeyN
BITOP NOT destkey srckey
BITPOS key bit [ start [ end [ BYTE | BIT]]]
HyperLogLog
其优点是在输入元素的数量非常大时，计算基数所需的空间比较小并且一般比较恒定
PFADD、PFCOUNT、PFMERGE
127.0.0.1:6379> PFADD hll1 foo bar zap a
(integer) 1
127.0.0.1:6379> PFADD hll2 a b c foo
(integer) 1
127.0.0.1:6379> PFMERGE hll3 hll1 hll2
OK
127.0.0.1:6379> PFCOUNT hll3
(integer) 6
Geospatial
root@tangshihua:/# cd usr/local/bin
root@tangshihua:/usr/local/bin# redis-server tconfig/redis.conf
root@tangshihua:/usr/local/bin# redis-cli -p 6379
127.0.0.1:6379> ping
PONG
127.0.0.1:6379> keys *
1) "set"
127.0.0.1:6379> flushdb
OK
127.0.0.1:6379> geoadd china:city 116.52 40.32
(error) ERR wrong number of arguments for 'geoadd' command
127.0.0.1:6379>
127.0.0.1:6379> geoadd china:city 116.52 40.32 beijing #1、添加一个城市的信息（精度、维度、城市名称）
(integer) 1
127.0.0.1:6379> geoadd china:city 121.48 31.40 shanghai 106.54 29.40 chongqing 113.88 22.55 shenzhen # 2、也可以同时添加多个
(integer) 3
127.0.0.1:6379> keys *
1) "china:city"
127.0.0.1:6379> geopos china:city beijing # 3、获取一个城市的精度维度信息
1) 1) "116.52000099420547485"
2) "40.32000085305222825"
127.0.0.1:6379> geopos china:city shanghai
1) 1) "121.48000091314315796"
2) "31.40000025319353938"
127.0.0.1:6379> geopos china:city shanghai beijing # 4、也可以同获取多个
1) 1) "121.48000091314315796"
2) "31.40000025319353938"
2) 1) "116.52000099420547485"
2) "40.32000085305222825"
127.0.0.1:6379> geodist china beijing shanghai km
(nil)
127.0.0.1:6379> geodist china:city beijing shanghai km
"1087.7347"
127.0.0.1:6379> geodist china:city beijing chongqing # 5、计算两个城市的距离，默认单位是米
"1515915.5680"
127.0.0.1:6379> geodist china:city beijing chongqing km # 6、计算两个城市的距离，指定单位
"1515.9156"
127.0.0.1:6379> GEORADIUS china:city 110 30 1000 km # 7、查找指定经纬度附件方圆1000km的城市（城市数据要录入才能查询）
1) "chongqing"
2) "shenzhen"
127.0.0.1:6379> GEORADIUS china:city 110 30 500 km
1) "chongqing"
127.0.0.1:6379> GEORADIUS china:city 110 30 1000 km count 1 # 8、指定数量
1) "chongqing"
127.0.0.1:6379> GEORADIUS china:city 110 30 1000 km
1) "chongqing"
2) "shenzhen"
127.0.0.1:6379> GEORADIUS china:city 110 30 1000 km withdist #9、同时显示距离
1) 1) "chongqing"
2) "340.8679"
2) 1) "shenzhen"
2) "914.3335"
127.0.0.1:6379> GEORADIUS china:city 110 30 1000 km withcoord # 10、同时显示经纬度
1) 1) "chongqing"
2) 1) "106.54000014066696167"
2) "29.39999880018641676"
2) 1) "shenzhen"
2) 1) "113.87999922037124634"
2) "22.5500010475923105"
127.0.0.1:6379> georadiusbymember china:city beijing 1000 km # 11、查询指定城市方圆1000km的城市信息
1) "beijing"
127.0.0.1:6379> georadiusbymember china:city beijing 2000 km
1) "chongqing"
2) "shenzhen"
3) "shanghai"
4) "beijing"
127.0.0.1:6379> keys *
1) "china:city"
127.0.0.1:6379> zrange china:city 0 -1 # 12、显示全部城市信息
1) "chongqing"
2) "shenzhen"
3) "shanghai"
4) "beijing"
127.0.0.1:6379> zrem china:city shanghai # 13、移除城市信息
(integer) 1
127.0.0.1:6379> zrange china:city 0 -1
1) "chongqing"
2) "shenzhen"
3) "beijing"
127.0.0.1:6379> geohash china:city beijing # 14、获取指定城市的geohash值
1) "wx4v7kp30b0"
127.0.0.1:6379>
