Detailed explanation of simple operations of five Redis data types

Redis is an open source log-type Key-Value database written in ANSI C language, supports network, can be memory-based and persistent, and provides APIs in multiple languages. This article mainly introduces relevant information on simple operations of five data types in Redis. Friends who need it can refer to it. I hope it can help everyone.

Simple operation of five data types in Redis

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Simple addition, deletion, modification and query of five data types in Redis Order? ? ?

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Assume you have installed the Redis server;
Assume you have opened the Redis cli command line tool;
Assume you have some knowledge of Redis ;

Redis simple addition, deletion, modification and query example

Example 1: String addition, deletion, modification and query

#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

Example 2: Check for additions, deletions and modifications of the Set collection

#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

Example 3: Query for additions, deletions and modifications of the List collection

#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"

Example 4: Add, delete, and modify query for Hash collection (similar to Java)

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"

Example 5: Add, delete, and modify query for SortedSet collection

SortedSet is an ordered set collection

#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"

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