Redis数据类型之列表命令

朱雀 2021-07-25 02:12 410阅读 0赞

**一 点睛**

![20200105120941173.png][]

**二 实战**

1 LPUSH命令：将多个值插入表头

127.0.0.1:6379> LPUSH student_1 171 'nan' 22 20180001
    4
    127.0.0.1:6379> LPUSH student_2 172 'nan' 23 20180001
    4
    127.0.0.1:6379> LPUSH student_3 173 'nan' 24 20170001
    4
    127.0.0.1:6379> LPUSH student_4 174 'nan' 25 20180001
    4
    127.0.0.1:6379> LPUSH student_5 175 'nan' 22 20190001
    4

2 RPUSH命令：将多个值插入表尾

127.0.0.1:6379> RPUSH student_1 75 1983-02-02
    6
    127.0.0.1:6379> RPUSH student_2 75 1982-02-02
    6
    127.0.0.1:6379> RPUSH student_3 73 1983-02-02
    6
    127.0.0.1:6379> RPUSH student_4 71 1984-02-02
    6
    127.0.0.1:6379> RPUSH student_5 72 1983-02-02
    6

3 LINSERT命令：插入一个值到列表中

127.0.0.1:6379> LINSERT student_1 AFTER 22 'ruanjiangongcheng1ban'
    7
    127.0.0.1:6379> LINSERT student_2 AFTER 23 'ruanjiangongcheng2ban'
    7
    127.0.0.1:6379> LINSERT student_3 AFTER 24 'ruanjiangongcheng3ban'
    7
    127.0.0.1:6379> LINSERT student_4 AFTER 25 'ruanjiangongcheng3ban'
    7
    127.0.0.1:6379> LINSERT student_5 AFTER 22 'ruanjiangongcheng1ban'
    7

4 LPUSHX命令：将值插入列表头部

127.0.0.1:6379> LPUSHX student_1 'zhangsan'
    8
    127.0.0.1:6379> LPUSHX student_2 'lisi'
    8
    127.0.0.1:6379> LPUSHX student_3 'wangwu'
    8
    127.0.0.1:6379> LPUSHX student_4 'xiaoming'
    8
    127.0.0.1:6379> LPUSHX student_5 'xiaohong'
    8

5 RPUSHX命令：将值插入列表尾部

127.0.0.1:6379> RPUSHX student_1 'swim'
    9
    127.0.0.1:6379> RPUSHX student_2 'song'
    9
    127.0.0.1:6379> RPUSHX student_3 'film'
    9
    127.0.0.1:6379> RPUSHX student_4 'swim'
    9
    127.0.0.1:6379> RPUSHX student_5 'draw'
    9

6 LSET命令：修改列表元素值

127.0.0.1:6379> LSET student_1 2 25
    OK
    127.0.0.1:6379> LSET student_1 5 175
    OK
    127.0.0.1:6379> LSET student_3 1 20181123
    OK
    127.0.0.1:6379> LSET student_3 3 'tumugongcheng'
    OK

7 LLEN命令：统计列表的长度

127.0.0.1:6379> LLEN student_1
    9
    127.0.0.1:6379> LLEN student_2
    9
    127.0.0.1:6379> LLEN student_3
    9
    127.0.0.1:6379> LLEN student_4
    9
    127.0.0.1:6379> LLEN student_5
    9

8 LINDEX命令：获取列表元素的值

127.0.0.1:6379> LINDEX student_1 2
    25
    127.0.0.1:6379> LINDEX student_1 5
    175
    127.0.0.1:6379> LINDEX student_3 1
    20181123
    127.0.0.1:6379> LINDEX student_5 3
    ruanjiangongcheng1ban

9 LRANGE命令：获取列表指定区间内的元素

127.0.0.1:6379> LRANGE student_1 0 -1
    zhangsan
    20180001
    25
    ruanjiangongcheng1ban
    nan
    175
    75
    1983-02-02
    swim
    127.0.0.1:6379> LRANGE student_1 3 4
    ruanjiangongcheng1ban
    nan
    127.0.0.1:6379> LRANGE student_1 0 -5
    zhangsan
    20180001
    25
    ruanjiangongcheng1ban
    nan
    127.0.0.1:6379> LRANGE student_3 10 20
    
    127.0.0.1:6379> LRANGE student_3 5 -1
    173
    73
    1983-02-02
    film

10 LPOP命令：返回并删除列表头元素

127.0.0.1:6379> LRANGE student_5 0 -1
    xiaohong
    20190001
    22
    ruanjiangongcheng1ban
    nan
    175
    72
    1983-02-02
    draw
    127.0.0.1:6379> LPOP student_5
    xiaohong
    127.0.0.1:6379> LPOP student_5
    20190001
    127.0.0.1:6379> LRANGE student_5 0 -1
    22
    ruanjiangongcheng1ban
    nan
    175
    72
    1983-02-02
    draw

11 RPOP命令：返回并删除列表尾元素

127.0.0.1:6379> RPOP student_5
    draw
    127.0.0.1:6379> RPOP student_5
    1983-02-02
    127.0.0.1:6379> LRANGE student_5 0 -1
    22
    ruanjiangongcheng1ban
    nan
    175
    72

12 BLPOP命令：在指定时间内删除列表头元素

127.0.0.1:6379> LRANGE student_5 0 -1
    22
    ruanjiangongcheng1ban
    nan
    175
    72
    127.0.0.1:6379> BLPOP student_5 5
    student_5
    22
    127.0.0.1:6379> BLPOP student_6 300            #开始时是阻塞的，当在另外一个客户端执行LPUSH student_6 'xiaohua'命令时，出现下面的结果
    student_6
    xiaohua
    (38.28s)

13 BRPOP命令：在指定时间内删除列表尾元素

127.0.0.1:6379> LRANGE student_5 0 -1
    ruanjiangongcheng1ban
    nan
    175
    72
    127.0.0.1:6379> BRPOP student_5 20
    student_5
    72
    127.0.0.1:6379> BRPOP student_5 200
    student_5
    175

14 LREM命令：删除指定个数的元素

127.0.0.1:6379> LRANGE student_5 0 -1
    ruanjiangongcheng1ban
    nan
    127.0.0.1:6379> LREM student_5 1 'nan'
    1
    127.0.0.1:6379> LREM student_5 2 'nan'
    0

15 LTRIM命令：在指定区间内修剪列表

127.0.0.1:6379> LTRIM student_4 0 50
    OK
    127.0.0.1:6379> LRANGE student_4 0 -1
    xiaoming
    20180001
    25
    ruanjiangongcheng3ban
    nan
    174
    71
    1984-02-02
    swim
    127.0.0.1:6379> LTRIM student_4 0 6
    OK
    127.0.0.1:6379> LRANGE student_4 0 -1
    xiaoming
    20180001
    25
    ruanjiangongcheng3ban
    nan
    174
    71

16 RPOPLPUSH：将列表元素移动到另一列表中

127.0.0.1:6379> RPOPLPUSH student_1 student6
    swim
    127.0.0.1:6379> LRANGE student6 0 -1
    swim
    127.0.0.1:6379> RPOPLPUSH student_1 student6
    1983-02-02
    127.0.0.1:6379> LRANGE student6 0 -1
    1983-02-02
    swim

17 BRPOPLPUSH：在指定时间内移动列表元素到另一列表中

127.0.0.1:6379> LRANGE student_1 0 -1
    zhangsan
    20180001
    25
    ruanjiangongcheng1ban
    nan
    175
    75
    127.0.0.1:6379> BRPOPLPUSH student_1 student6 200
    75
    127.0.0.1:6379> BRPOPLPUSH student_1 student6 200
    175
    127.0.0.1:6379> BRPOPLPUSH student_1 student6 200
    nan

[20200105120941173.png]: /images/20210724/534856e2a42a4d1d84f1e6a4d754de65.png