通过 node.js 应用程序在 redis 中保存嵌套哈希 [英] Save nested hash in redis via a node.js app

问题描述

我正在使用 node_redis 并且我想保存如下结构:

I'm using node_redis and I'd like to save a structure like:

{
users : 
    "alex" : { "email" : "[e-mail]",
           "password" : "alex123"},
    "sandra" : { "email" : "[e-mail]",
           "password" : "sandra123"},
    ...
}

目前，我为每个用户创建一个 JSON 对象:

Currently, for each user I create a JSON object:

jsonObj = { "email" : "[e-mail]",
            "password" : "alex123"}

然后做一个

db.hmset("alex", JSON.stringify(jsonObj))

是否可以将此结构嵌入到另一种结构中(用户结构?)我怎么能用这个结构设置 users["alex"] ?

Is it possible to embedded this strucute in another structure (the users one ?) How could I set users["alex"] with this structure ?

推荐答案

据我所知，Redis 中没有对嵌套结构的原生支持，但可以使用 set+hash(类似于 层次树).哈希 可能最适合存储单个 JSON 对象的字段和值.我要做的是为每个用户存储一个前缀(这是一个 Redis 约定)，例如:

As far as I know there isn't native support for nested structures in Redis, but they can be modeled for example with set+hash (similar to hierarchical trees). Hashes are probably best suited for storing fields and values of single JSON object. What I would do is to store each user with a prefix (which is a Redis convention), for example:

db.hmset("user:alex", JSON.stringify(jsonObj));

然后使用 sets 使用名为 users.然后，我可以通过 smembers 命令获取所有用户密钥，并使用 hgetall.

and then use sets to group users into one set with a key named users. I can then get all of the users keys by smembers command and access each of them individually with hgetall.

这篇关于通过 node.js 应用程序在 redis 中保存嵌套哈希的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！