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01.redis 127.0.0.1:6379> smembers diff 
02.1) "zhangsan01" 
03.redis 127.0.0.1:6379> rename diff diff01 
04.OK 
05.redis 127.0.0.1:6379> smembers diff 
06.(empty list or set) 
07.redis 127.0.0.1:6379> smembers diff01 
08.1) "zhangsan01" 
09.redis 127.0.0.1:6379> rename diff diff01 
10.(error) ERR no such key 
redis 127.0.0.1:6379> smembers diff
1) "zhangsan01"
redis 127.0.0.1:6379> rename diff diff01
OK
redis 127.0.0.1:6379> smembers diff
(empty list or set)
redis 127.0.0.1:6379> smembers diff01
1) "zhangsan01"
redis 127.0.0.1:6379> rename diff diff01
(error) ERR no such key 注意：当key和newkey相同或key不存在时，返回错误;当newkey已存在时，rename将覆盖旧值。

9）renamenx
语法：renamenx key newkey

解释：当且仅当newkey不存在时，改名key

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01.redis 127.0.0.1:6379> renamenx diff01 stu  #stu存在 
02.(integer) 0 
03.redis 127.0.0.1:6379> renamenx diff01 diff #diff不存在 
04.(integer) 1 
redis 127.0.0.1:6379> renamenx diff01 stu  #stu存在
(integer) 0
redis 127.0.0.1:6379> renamenx diff01 diff #diff不存在
(integer) 1
10）del

语法：del key [key ...]

   解释：删除一个或多个key

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01.redis 127.0.0.1:6379> del score1 
02.(integer) 1 
03.redis 127.0.0.1:6379> del union diff aa  #key aa 不存在 
04.(integer) 2 
redis 127.0.0.1:6379> del score1
(integer) 1
redis 127.0.0.1:6379> del union diff aa  #key aa 不存在
(integer) 2 11）move

语法：move key db

解释：将key移动到指定db

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01.redis 127.0.0.1:6379> smembers stu #默认0 
02.1) "zhangsan01" 
03.2) "wangwu" 
04.redis 127.0.0.1:6379> move stu 1  #移动到 1 
05.(integer) 1 
06.redis 127.0.0.1:6379> smembers stu 
07.(empty list or set) 
08.redis 127.0.0.1:6379> select 1 #选择db 1 
09.OK 
10.redis 127.0.0.1:6379[1]> smembers stu 
11.1) "zhangsan01" 
12.2) "wangwu" 
redis 127.0.0.1:6379> smembers stu #默认0
1) "zhangsan01"
2) "wangwu"
redis 127.0.0.1:6379> move stu 1  #移动到 1
(integer) 1
redis 127.0.0.1:6379> smembers stu
(empty list or set)
redis 127.0.0.1:6379> select 1 #选择db 1
OK
redis 127.0.0.1:6379[1]> smembers stu
1) "zhangsan01"
2) "wangwu" 12）sort

语法：sort key [BY pattern] [LIMIT offset count] [GET pattern [GET pattern ...]] [ASC|DESC] [ALPHA] [STORE destination]

解释：返回或保持给定列表，集合，有序集合key中经过排序的元素

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01.redis 127.0.0.1:6379> sort lst.tech limit 0 2 alpha desc #按字符集排序 
02.1) "tec06" 
03.2) "tec05" 
04.redis 127.0.0.1:6379> sort lst.stud 
05.1) "1" 
06.2) "2" 
07.3) "3" 
08.redis 127.0.0.1:6379> sort lst.stud desc  
09.1) "3" 
10.2) "2" 
11.3) "1" 
12.redis 127.0.0.1:6379> keys stu.* 
13.1) "stu.name.2" 
14.2) "stu.name.3" 
15.3) "stu.level.1" 
16.4) "stu.level.2" 
17.5) "stu.level.3" 
18.6) "stu.name.1" 
19.redis 127.0.0.1:6379> sort lst.stud by stu.level.* desc get stu.level.* get stu.name.* 
20.1) "3" 
21.2) "admin" 
22.3) "2" 
23.4) "joe" 
24.5) "1" 
25.6) "jim" 
26.redis 127.0.0.1:6379> sort lst.stud by stu.level.* asc get stu.name.* 
27.1) "jim" 
28.2) "joe" 
29.3) "admin" 
redis 127.0.0.1:6379> sort lst.tech limit 0 2 alpha desc #按字符集排序
1) "tec06"
2) "tec05"
redis 127.0.0.1:6379> sort lst.stud
1) "1"
2) "2"
3) "3"
redis 127.0.0.1:6379> sort lst.stud desc
1) "3"
2) "2"
3) "1"
redis 127.0.0.1:6379> keys stu.*
1) "stu.name.2"
2) "stu.name.3"
3) "stu.level.1"
4) "stu.level.2"
5) "stu.level.3"毕业论文 
6) "stu.name.1"
redis 127.0.0.1:6379> sort lst.stud by stu.level.* desc get stu.level.* get stu.name.*
1) "3"
2) "admin"
3) "2"
4) "joe"
5) "1"
6) "jim"
redis 127.0.0.1:6379> sort lst.stud by stu.level.* asc get stu.name.*
1) "jim"
2) "joe"
3) "admin"
sort虽然很“厉害”，但尽量不要让redis服务器来sort大量的数据。可以通过设定阀值减少要sort的数据，或把排序操作向前移，在web服务器或各个应用上来sort。

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