侧边栏壁纸
  • 累计撰写 781 篇文章
  • 累计创建 1 个标签
  • 累计收到 1 条评论
标签搜索

类型

Dettan
2021-04-10 / 0 评论 / 0 点赞 / 103 阅读 / 14,398 字
温馨提示:
本文最后更新于 2021-04-10,若内容或图片失效,请留言反馈。部分素材来自网络,若不小心影响到您的利益,请联系我们删除。

String 整数,浮点数或者字符串
一个key对应一个value.
二进制安全 : 可以存储任何数据,比如图片或序列化的对象
MAX : 512MB
set key value
get key
Hash Map
一个key对应着一个键值对集合
适合用于存储对象。
hmset key field1 value field2 value
hmget key field

List
一个key对应着一个值的集合
按照插入顺序排序
列表最多可存储 232 - 1 元素 (4294967295, 每个列表可存储40多亿)。
index 从0开始, len从1 开始.


B 表示阻塞
L 表示从头部操作
R 表示从尾部操作
X 表示快速,不检查是否存在
BLMOVE
BLPOP
BRPOP
BRPOPLPUSH
LINDEX
LINSERT
LLEN
LMOVE
LMOVE mylist myotherlist RIGHT LEFT 从list1的尾巴拿一个元素放到list2的头
LPUSH
lpush key value 栈的push操作,插在头上,新push的元素的index是0
LPOP
LPOS
lpos key element [rank 从第几个结果开始输出] [count 输出几个结果] [maxlen 每次循环找到第几个元素(长度就是从1开始了)]
LSET
LPUSHX
LRANGE
例 : lrange key 0 -1
LREM
lrem key count element 删除. 从头开始
LTRIM
ltrim key start stop 删除范围外的, 左闭右闭
RPOP
RPOPLPUSH
RPUSH
RPUSHX

127.0.0.1:6379> lpush list 1
(integer) 1
127.0.0.1:6379> lpush list 2
(integer) 2
127.0.0.1:6379> lpush list 3
(integer) 3
127.0.0.1:6379> lrange list 0 10
1) "3"
2) "2"
3) "1"
127.0.0.1:6379> lindex list 0
"3"
127.0.0.1:6379> lindex list  2
"1"
Set 集合
Redis 的 Set 是 string 类型的无序集合。 集合是通过哈希表实现的,所以添加,删除,查找的复杂度都是 O(1)。
集合中最大的成员数为 232 - 1(4294967295, 每个集合可存储40多亿个成员)。

SADD key member [member ...]Add one or more members to a set
SCARD keyGet the number of members in a set
SDIFF key [key ...]Subtract multiple sets
在第一个key里不在右边的所有元素
SDIFFSTORE destination key [key ...]Subtract multiple sets and store the resulting set in a key
SINTER key [key ...]Intersect multiple sets
SINTERSTORE destination key [key ...]Intersect multiple sets and store the resulting set in a key
SISMEMBER key memberDetermine if a given value is a member of a set
SMISMEMBER key member [member ...]Returns the membership associated with the given elements for a set
是的话返回1 不是返回0
SMEMBERS keyGet all the members in a set
SMOVE source destination memberMove a member from one set to another
操作的聚合,没别的
SPOP key [count]Remove and return one or multiple random members from a set
随机弹出
SRANDMEMBER key [count]Get one or multiple random members from a set
随机获取
SREM key member [member ...]Remove one or more members from a set
删除
SUNION key [key ...]Add multiple sets
集合合并起来,只是返回一个结果,不对keys做更改
SUNIONSTORE destination key [key ...]Add multiple sets and store the resulting set in a key
SSCAN key cursor [MATCH pattern] [COUNT count]Incrementally iterate Set elements

Zset 有序集合
使用跳跃表实现
Redis zset 和 set 一样也是string类型元素的集合,且不允许重复的成员。 不同的是每个元素都会关联一个double类型的分数。redis正是通过分数来为集合中的成员进行从小到大的排序。 zset的成员是唯一的,但分数(score)却可以重复。

ZADD key [NX|XX] [GT|LT] [CH] [INCR] score member [score member ...]Add one or more members to a sorted set, or update its score if it already exists
ZCARD keyGet the number of members in a sorted set
ZINCRBY key increment memberIncrement the score of a member in a sorted set
BZPOPMIN key [key ...] timeoutRemove and return the member with the lowest score from one or more sorted sets, or block until one is available
BZPOPMAX key [key ...] timeoutRemove and return the member with the highest score from one or more sorted sets, or block until one is available
ZCOUNT key min maxCount the members in a sorted set with scores within the given values
ZDIFF numkeys key [key ...] [WITHSCORES]Subtract multiple sorted sets
ZDIFFSTORE destination numkeys key [key ...]Subtract multiple sorted sets and store the resulting sorted set in a new key
ZINTER numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX] [WITHSCORES]Intersect multiple sorted sets
ZINTERSTORE destination numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX]Intersect multiple sorted sets and store the resulting sorted set in a new key
ZLEXCOUNT key min maxCount the number of members in a sorted set between a given lexicographical range
ZPOPMAX key [count]Remove and return members with the highest scores in a sorted set
ZPOPMIN key [count]Remove and return members with the lowest scores in a sorted set
ZRANGE key start stop [WITHSCORES]Return a range of members in a sorted set, by index
ZRANGEBYLEX key min max [LIMIT offset count]Return a range of members in a sorted set, by lexicographical range
ZREVRANGEBYLEX key max min [LIMIT offset count]Return a range of members in a sorted set, by lexicographical range, ordered from higher to lower strings.
ZRANGEBYSCORE key min max [WITHSCORES] [LIMIT offset count]Return a range of members in a sorted set, by score
ZRANK key memberDetermine the index of a member in a sorted set
ZREM key member [member ...]Remove one or more members from a sorted set
ZREMRANGEBYLEX key min maxRemove all members in a sorted set between the given lexicographical range
ZREMRANGEBYRANK key start stopRemove all members in a sorted set within the given indexes
ZREMRANGEBYSCORE key min maxRemove all members in a sorted set within the given scores
ZREVRANGE key start stop [WITHSCORES]Return a range of members in a sorted set, by index, with scores ordered from high to low
ZREVRANGEBYSCORE key max min [WITHSCORES] [LIMIT offset count]Return a range of members in a sorted set, by score, with scores ordered from high to low
ZREVRANK key memberDetermine the index of a member in a sorted set, with scores ordered from high to low
ZSCORE key memberGet the score associated with the given member in a sorted set
ZUNION numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX] [WITHSCORES]Add multiple sorted sets
ZMSCORE key member [member ...]Get the score associated with the given members in a sorted set
ZUNIONSTORE destination numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX]Add multiple sorted sets and store the resulting sorted set in a new key
ZSCAN key cursor [MATCH pattern] [COUNT count]Incrementally iterate sorted sets elements and associated scores

0

评论区