目标:掌握String类型的常用命令
实施
node1:6379> keys *
(empty list or set)
node1:6379> set s1 hadoop
OK
node1:6379> get s1
"hadoop"
node1:6379> mset s2 hive s3 spark
OK
node1:6379> keys *
1) "s3"
2) "s1"
3) "s2"
node1:6379> mget s1 s3
1) "hadoop"
2) "spark"
node1:6379> set s1 oozie
OK
node1:6379> get s1
"oozie"
node1:6379>
node1:6379> setnx s4 hue
(integer) 1
node1:6379> get s4
"hue"
node1:6379> setnx s4 flume
(integer) 0
node1:6379> get s4
"hue"
node1:6379> set s5 2
OK
node1:6379> get s5
"2"
node1:6379> incr s5
(integer) 3
node1:6379> get s5
"3"
node1:6379> incr s5
(integer) 4
node1:6379> get s5
"4"
node1:6379> incrby s5 3
(integer) 7
node1:6379> get s5
"7"
node1:6379> decr s5
(integer) 6
node1:6379> get s5
"6"
node1:6379> decrby s5 2
(integer) 4
node1:6379> get s5
"4"
node1:6379> set s6 19.2
OK
node1:6379> get s6
"19.2"
node1:6379> incrbyfloat s6 2.5
"21.7"
node1:6379> get s6
"21.7"
node1:6379> get s1
"oozie"
node1:6379> strlen s1
(integer) 5
node1:6379> getrange s1 0 2
"ooz"
node1:6379> getrange s1 2 2
"z"
node1:6379>
小结
目标:掌握Hash类型的常用命令
实施
node1:6379> hget m1 name
"zhangsan"
node1:6379> hget m1 age
"19"
node1:6379> hmset m1 gender male phone 110 addr shanghai
OK
node1:6379> hmget m1 name phone gender
1) "zhangsan"
2) "110"
3) "male"
node1:6379> hgetall m1
1) "name"
2) "zhangsan"
3) "age"
4) "19"
5) "gender"
6) "male"
7) "phone"
8) "110"
9) "addr"
10) "shanghai"
node1:6379> hdel m1 gender
(integer) 1
node1:6379> hgetall m1
1) "name"
2) "zhangsan"
3) "age"
4) "19"
5) "phone"
6) "110"
7) "addr"
8) "shanghai"
node1:6379> hlen m1
(integer) 4
node1:6379> hexists m1 name
(integer) 1
node1:6379> hexists m1 gender
(integer) 0
node1:6379> hgetall m1
1) "name"
2) "zhangsan"
3) "age"
4) "19"
5) "phone"
6) "110"
7) "addr"
8) "shanghai"
node1:6379> hvals m1
1) "zhangsan"
2) "19"
3) "110"
4) "shanghai"
小结
目标:掌握List类型的常用命令
实施
node1:6379> lpush list1 1 2 2 3
(integer) 4
node1:6379> rpush list1 4 5 6 6 7 8
(integer) 10
node1:6379> lrange list1 0 9
1) "3"
2) "2"
3) "2"
4) "1"
5) "4"
6) "5"
7) "6"
8) "6"
9) "7"
10) "8"
node1:6379> lrange list1 4 9
1) "4"
2) "5"
3) "6"
4) "6"
5) "7"
6) "8"
node1:6379> llen list1
(integer) 10
node1:6379> lrange list1 0 -1
1) "3"
2) "2"
3) "2"
4) "1"
5) "4"
6) "5"
7) "6"
8) "6"
9) "7"
10) "8"
node1:6379> lrange list1 0 -3
1) "3"
2) "2"
3) "2"
4) "1"
5) "4"
6) "5"
7) "6"
8) "6"
node1:6379> lrange list1 -3 -1
1) "6"
2) "7"
3) "8"
node1:6379> lpop list1
"3"
node1:6379> rpop list1
"8"
node1:6379> lrange list1 0 -1
1) "2"
2) "2"
3) "1"
4) "4"
5) "5"
6) "6"
7) "6"
8) "7"
node1:6379>
小结
node1:6379> sadd set1 1 1 2 2 3 4 3 4
(integer) 4
node1:6379> smembers set1
1) "1"
2) "2"
3) "3"
4) "4"
node1:6379> scard set1
(integer) 4
node1:6379> sismember set1 1
(integer) 1
node1:6379> sismember set1 5
(integer) 0
node1:6379> srem set1 3
(integer) 1
node1:6379> smembers set1
1) "1"
2) "2"
3) "4"
node1:6379> sadd set2 1 3 6 9 8 9
(integer) 5
node1:6379> sunion set1 set2
1) "1"
2) "2"
3) "3"
4) "4"
5) "6"
6) "8"
7) "9"
node1:6379> sinter set1 set2
1) "1"
node1:6379>
目标:掌握Zset类型的常用命令
实施
node1:6379> zadd zset1 99.5 yingyu 30.7 shuxue 29.9 yuwen 100 shengwu 56.73 dili
(integer) 5
node1:6379> zrange zset1 0 -1
1) "yuwen"
2) "shuxue"
3) "dili"
4) "yingyu"
5) "shengwu"
node1:6379> zrevrange zset1 0 -1
1) "shengwu"
2) "yingyu"
3) "dili"
4) "shuxue"
5) "yuwen"
node1:6379> zrevrange zset1 0 -1 withscores
1) "shengwu"
2) "100"
3) "yingyu"
4) "99.5"
5) "dili"
6) "56.729999999999997"
7) "shuxue"
8) "30.699999999999999"
9) "yuwen"
10) "29.899999999999999"
node1:6379>
node1:6379> zrem zset1 yuwen
(integer) 1
node1:6379> zrevrange zset1 0 -1 withscores
1) "shengwu"
2) "100"
3) "yingyu"
4) "99.5"
5) "dili"
6) "56.729999999999997"
7) "shuxue"
8) "30.699999999999999"
node1:6379>
node1:6379> zcard zset1
(integer) 4
node1:6379> zscore zset1 shuxue
"30.699999999999999"
小结
目标:掌握BitMap类型的常用命令
实施
功能:通过一个String对象的存储空间,来构建位图,用每一位0和1来表示状态
举例:统计UV
setbit:修改某一位的值
语法:setbit bit1 位置 0/1
setbit bit1 0 1
getbit:查看某一位的值
语法:getbit K 位置
getbit bit1 9
bitcount:用于统计位图中所有1的个数
语法:bitcount K [start end]
bitcount bit1
#start和end表示的是字节:1 字节 = 8 位
bitcount bit1 0 10
bitop:用于位图的运算:and/or/not/xor
语法:bitop and/or/xor/not bitrs bit1 bit2
bitop and bit3 bit1 bit2
bitop or bit4 bit1 bit2
小结
目标:掌握HyperLogLog类型的常用命令
实施
功能:类似于Set集合,用于实现数据的去重
pfadd:用于添加元素
语法:pfadd K e1 e2 e3……
pfadd pf1 userid1 userid1 userid2 userid3 userid4 userid3 userid4
pfadd pf2 userid1 userid2 userid2 userid5 userid6
pfcount:用于统计个数
语法:pfcount K
pfcount pf1
pfmerge:用于实现集合合并
语法:pfmerge pfrs pf1 pf2……
pfmerge pf3 pf1 pf2
小结