Redis Common operations

One, common commands of type string

Set key1 com #一个key对应一个value, multiple copies, overwriting the previous value

Setnx key1 Zhangsan #如果key1不存在则创建key1, and returns 1, if Key1 exists, the value of key1 will not be overwritten and return 0

Setex Key3 Fansik #创建key3设置过期时间为100秒

TTL Key3 #查看key还有多久过期

Mset Key4 123 Key5 213 #同时设置多个值

Mget key1 key2 Key4 key5 #批量获取key值

Del Key1 #删除key1

Ii. common commands for hash types

Hset hash1 name Fanjinbao #建立一个key为name, value is a hash of Fanjinbao

Hget hash1 name #获取name的value

Hmset HASH1 Work It Singel Yes #批量创建键值对

Hmget HASH1 Work Single #批量获取key的value

Hgetall Hash1 #获取hash1所有的key和value

Hdel hash1 name #删除hash1中的name

Hkeys Hash1 #列出hash1所有的key值

Hvals Hash1 #列出hash1所有的value

Hlen Hash1 #查看hash1有几个filed (return its length)

Iii. Common commands for list types

Lpush List A b c #从左向list中添加a c c three values

Lrange list 0-1 #列出list中的值 (no rrange)

Lpop list #取最左侧的值 (the value taken is equivalent to being deleted)

Rpush List 1 2 3 #从右向list中添加1 2 33 values

Rpop list #取最右侧的值 (the value taken is equivalent to being deleted)

Linsert list before 1 ABX #在1的前面插入abx

LSet List 3 Hello #修改指定元素的值

Lindex List 1 #查看列表中的值 (and lpop the difference is that the viewed value is not deleted)

Llen List #查看列别中值得个数

Iv. common commands for set types

Sadd Set1 a b c D #向集合中添加元素

Smembers Set1 #查看集合中的元素

Srem Set1 a #删除集合中的元素

Spop Set1 #取出集合中的元素 (the value removed will be removed)

Sdiff Set1 Set2 #比较两个集合差值, which collection precedes the previous set of elements that are not in the latter collection

Sdiffstore Set3 Set1 Set2 #将set1与set2的差值存储到set3中

Sinter Set1 Set2 #列出set1和set2中相同的元素 (intersection)

Sinterstore Set3 Set1 Set2 #将交集结果存储到set3中

Sunion Set1 Set2 #列出set1和set2并集 (Set1 and Set2 all elements)

Sunionstore Set3 Set1 Set2 #将并集结果保存到set3中

Sismember Set3 Fansik #判断set3里是否有fansik, there is return 1, no then 0

Srandmember Set3 #随机取出set3中的一个元素

V. Common commands for Zset types (ordered collection)

Zadd Zset 1 123 2 234 #创建有序集合

Zrange zset 0-1 #查看有序集合元素, displayed sequentially

Zrange zset 0-1 withscores #带分值显示

Zrem Zset 123 #删除一个元素

Zrank Zset 555 #返回元素的索引值, index value starting from 0, sorted by score

Zrevrank zset 444 #返回元素的索引值, index value starting from 0, reverse sort by score

Zcard Zset #反馈集合中所有元素的个数

Zcount Zset 1 #返回分值范围内1-10 of the number of elements

Elements of Zrangebyscore Zset 1 #返回分值范围内1-10

Zremrangebyrank Zset 0 2 #删除索引范围0-2 elements, sorted by score

Elements of Zremrangebyscore Zset 1 #删除分值范围1-10

Six, key values and server commands

Keys * #取出所有key值

Keys set* #模糊匹配

exists list #有list键返回1, otherwise returns 0

Del list #删除list键成功返回1, otherwise returns 0

Expire Set1 #修改set1的过期时间为10秒

TTL set1 #查看set1键还有多长时间过期, unit is S, when Kset1 does not exist, returns-2 when Set1 exists but does not set remaining lifetime, returns 1, otherwise, returns the remaining lifetime of Set1

Select 1 #选择数据库, 0 data is entered by default

Move Set1 2 #把set1移动到2数据库

Persist Zset #取消zset的过期时间

Randomkey #随机返回一个key

Rename Key4 Keyfansik #重命名一个key

Type Keyfansik #查看一个键的类型

VII. Service-related operations

Dbsize #返回当前数据库中键的个数

Info #返回redis数据库状态信息

Flushdb #清空当前数据库中所有的键

Flushall #清空所有数据库中的所有的key

Redis Common operations