Redis：五种数据类型的简单增删改查

Redis简单增删改查例子

例一：字符串的增删改查

#增加一个key为ay_key的值

127.0.0.1:6379> set ay_key "ay"

OK

#查询ay_key的值

127.0.0.1:6379> get ay_key

"ay"

#修改ay_key的值

127.0.0.1:6379> set ay_key "new_ay"

OK

127.0.0.1:6379> get ay_key

"new_ay"

#修改ay_key名称

127.0.0.1:6379> rename ay_key new_ay_key

OK

127.0.0.1:6379> keys *

1) "new_ay_key"

#删除ay_key

127.0.0.1:6379> del ay_key

(integer) 0

#查询是否存在ay_key  0

127.0.0.1:6379> exists ay_key

(integer) 0

 

例二：Set集合的增删改查

#删除当前选择数据库中的所有key

127.0.0.1:6379> flushdb

OK

#生成set集合，添加4个数据

127.0.0.1:6379> sadd set_ay_key "ay" "al" "xy" "xl"

(integer) 4

#查询set里面所有值

127.0.0.1:6379> smembers set_ay_key

1) "xy"

2) "al"

3) "ay"

4) "xl"

#删除value为"xl" , 返回 1  如果没有返回 0

127.0.0.1:6379> srem set_ay_key "xl"

(integer) 1

127.0.0.1:6379> smembers set_ay_key

1) "xy"

2) "al"

3) "ay"

#添加value为"xl"

127.0.0.1:6379> sadd set_ay_key "xl"

(integer) 1

127.0.0.1:6379> smembers set_ay_key

1) "xy"

2) "al"

3) "ay"

4) "xl"

#添加value为"xl"  添加不进去，但也不报错，set是不允许重复的

127.0.0.1:6379> sadd set_ay_key "xl"

(integer) 0

#不多解释

127.0.0.1:6379> sadd set_ay_key "xl"

(integer) 0

#不多解释

127.0.0.1:6379> sadd set_ay_key "xl"

(integer) 0

 

例三：List集合的增删改查

#添加key为list_ay_key的list集合

127.0.0.1:6379> lpush list_ay_key "ay" "al" "xy" "xl"

(integer) 4

#查询key为list_ay_key的集合

127.0.0.1:6379> lrange list_ay_key 0 -1

1) "xl"

2) "xy"

3) "al"

4) "ay"

#往list尾部添加元素

127.0.0.1:6379> rpush list_ay_key "together"

(integer) 5

#往list头部添加元素

127.0.0.1:6379> lpush list_ay_key "first"

(integer) 6

#查询list集合

127.0.0.1:6379> lrange list_ay_key 0 -1

1) "first"

2) "xl"

3) "xy"

4) "al"

5) "ay"

6) "together"

#更新index为0的值   

127.0.0.1:6379> lset list_ay_key 0 "update_first"

OK

127.0.0.1:6379> lrange list_ay_key 0 -1

1) "update_first"

2) "xl"

3) "xy"

4) "al"

5) "ay"

6) "together"

#删除index为1上的值

127.0.0.1:6379> lrem list_ay_key 1 "update_first"

(integer) 1

127.0.0.1:6379> lrange list_ay_key 0 -1

1) "xl"

2) "xy"

3) "al"

4) "ay"

5) "together"

 

例四：Hash集合(类似Java)的增删改查

127.0.0.1:6379> flushdb

OK

#生成hash集合，并添加key 为uuid_one value 为"12345"

127.0.0.1:6379> hset hash_ay_key "uuid_one" "12345"

(integer) 1

127.0.0.1:6379> hlen hash_ay_key

(integer) 1

#返回集合所有的key

127.0.0.1:6379> hkeys hash_ay_key

1) "uuid_one"

#返回集合所有value

127.0.0.1:6379> hvals hash_ay_key

1) "12345"

#集合添加值

127.0.0.1:6379> hset hash_ay_key "uuid_two" "22222"

(integer) 1

#集合添加值

127.0.0.1:6379> hset hash_ay_key "uuid_three" "33333"

(integer) 1

#获得key为uuid_one的值

127.0.0.1:6379> hget hash_ay_key  uuid_one

"12345"

#删除key为uuid_three的值

127.0.0.1:6379> hdel hash_ay_key uuid_three

(integer) 1

127.0.0.1:6379> hkeys hash_ay_key

1) "uuid_one"

2) "uuid_two"

#获得所有，包括key和value

127.0.0.1:6379> hgetall hash_ay_key

1) "uuid_one"

2) "12345"

3) "uuid_two"

4) "22222"

#更新key为uuid_one的值

127.0.0.1:6379> hset hash_ay_key uuid_one "11111"

(integer) 0

127.0.0.1:6379> hset hash_ay_key "uuid_one" "11111"

(integer) 0

127.0.0.1:6379> hgetall hash_ay_key

1) "uuid_one"

2) "11111"

3) "uuid_two"

4) "22222"

 

例四：SortedSet集合的增删改查

SortedSet是有序的set集合

#sorted set添加值ay 排序值为 1

127.0.0.1:6379> zadd zset_ay_key 1 "ay"

(integer) 1

127.0.0.1:6379> zadd zset_ay_key 2 "al"

(integer) 1

127.0.0.1:6379> zadd zset_ay_key 3 "xy"

(integer) 1

127.0.0.1:6379> zadd zset_ay_key 4 "xl"

(integer) 1

#查询所有的值

127.0.0.1:6379> zrange zset_ay_key 0 -1

1) "ay"

2) "al"

3) "xy"

4) "xl"

#删除所有的值

127.0.0.1:6379> zrem zet_ay_key "xl"

(integer) 0

127.0.0.1:6379> zrange zset_ay_key 0 -1

1) "ay"

2) "al"

3) "xy"

4) "xl"