redis一对多的实现？？？求解

Question

最近在学习使用redis，在关系型的mysql下一个简单的一对多，很简单，如下

用户表user主表

id	name	age
1	jack	5
2	rose	12
3	dad	23

图片表pics从表

id	uid	img_url
1	1	./1zxcz12ad.jpg
2	1	./zsad12sad.jpg
3	1	./12ea2222123xsw1212.jpg
4	2	./12eaxx12sw1212.jpg

换到基于key=》value的redis就晕了。。。请问如何设计出符合上表格的redis数据设计？？？

Answer 1

Redis was not designed to handle "relations" from the beginning, and MySQL is a relational database. Although not recommended, it can also be implemented with redis. You can use the user's id as a key and save these images into a list:
$redis->rPush("user_1", "./1zxcz12ad.jpg");
$redis->rPush("user_1", "./zsad12sad.jpg");
$redis->rPush("user_2", "./12eaxx12sw1212.jpg");
Then you can get this list through: $redis->lRange('user_1', 0, -1);.

Answer 2

You can only use hash.

Answer 3

The user main table uses hash.
The pics table is also processed using hash, but the field uses the ID of the pics

Answer 4

HSET User 1 "{name: 'jack', age: 5, Pics: [1, 2]}"

HSET User 2 "{name: 'rose', age: 12, Pics: [4]}"

HSET Pics 1 "{img_url: './1zxcz12ad.jpg', User: 1'}"
HSET Pics 2 "{img_url: './zsad12sad.jpg', User: 1'}"
HSET Pics 4 "{ img_url: './12eaxx12sw1212.jpg', User: 2'}"

Applicable to 1-to-many or 1-to-1 (ZADD key score member):

ZADD User_Pics 1 1
ZADD User_Pics 1 2
ZADD User_Pics 2 4

Query user 2’s pics (ZRANGEBYSCORE key min max [WITHSCORES])

ZRANGEBYSCORE User_Pics 2 2

Query the pics of user 1 and 2

ZRANGEBYSCORE User_Pics 1 2 WITHSCORES

Query the user (ZSCORE key member) of pics 4

ZSCORE User_Pics 4

---

---

---

HSET User 1 "{name: 'jack', age: 5, Pics: [1, 2]}"

HSET User 2 "{name: 'rose', age: 12, Pics: [1, 2]}"

HSET Pics 1 "{img_url: './1zxcz12ad.jpg', User: [1, 2]'}"

HSET Pics 2 "{img_url: './zsad12sad.jpg', User: [1, 2]'}"

For many-to-many (value is "userID-PicsID" ):
ZADD User_Pics 1 "1-1"
ZADD User_Pics 1 "1-2"
ZADD User_Pics 2 "2-1"
ZADD User_Pics 2 "2-2 "

Query user 2’s pics

ZRANGEBYSCORE User_Pics 2 2

Query the pics of user 1 and 2

ZRANGEBYSCORE User_Pics 1 2 WITHSCORES

ZADD Pics_User 1 "1-1"
ZADD Pics_User 1 "2-1"
ZADD Pics_User 2 "1-2"
ZADD Pics_User 2 "2-2"

Query the user of pics1 1

ZRANGEBYSCORE Pics_User 1 1

Query the user of pics1 1 and 2

ZRANGEBYSCORE Pics_User 1 2 WITHSCORES