我想使用redis一样的nosql数据库，我有一些想法如下。
假设我有3张table

1 - user
2 - post
3 - comment

我为每个表创建哈希，如下所示

hset user _usr_100 {"id":"_usr_100","name":"john","username"="jhn","age":25}
hset user _usr_101 {"id":"_usr_101","name":"adam","username"="adm","age":26}
hset user _usr_102 {"id":"_usr_102","name":"eric","username"="erc","age":27}

hset post _post_100 {"id":"_post_100","title":"title","content":"testpost","userid"="_usr_100"}
hset post _post_101 {"id":"_post_101","title":"title","content":"testpost","userid"="_usr_101"}
hset post _post_102 {"id":"_post_102","title":"title","content":"testpost","userid"="_usr_102"}

hset comment _comment_100 {"id":"_comment_100","content":"testpost","userid"="_usr_100","postid":"_post_100"}    
hset comment _comment_101 {"id":"_comment_101","content":"testpost","userid"="_usr_101","postid":"_post_101"}    
hset comment _comment_102 {"id":"_comment_102","content":"testpost","userid"="_usr_102","postid":"_post_102"}

当我想从redis获取user（\u user\u 100）时

hget user _usr_100
{"id":"_usr_100","name":"john","username"="jhn","age":25}

当我想得到用户的时候

hgetall user
{"id":"_usr_100","name":"john","username"="jhn","age":25}
{"id":"_usr_101","name":"adam","username"="adm","age":26}
{"id":"_usr_102","name":"eric","username"="erc","age":27}

在用pne反序列化json字符串并将它们填入列表之后，我有了一个列表，这样我就可以执行一些操作（搜索、groupby、排序、分页…），并且可以对另一个哈希（post、comment）执行相同的操作
我可以删除，更新用户；

hdel user _usr_101 // deleted _usr_101
hset user _usr_100 {"id":"_usr_100","name":"john","username"="jhn","age":26} //updated age
hset user _usr_103 {"id":"_usr_103","name":"max","username"="max","age":15} //new user

hgetall user
{"id":"_usr_100","name":"john","username"="jhn","age":26}
{"id":"_usr_102","name":"eric","username"="erc","age":27}
{"id":"_usr_103","name":"max","username"="max","age":15}

这种用法的缺点是什么？您是否可以提出另一种使用redis-like nosql表的hash方法。