通过node.js应用将嵌套的哈希保存在Redis中 [英] Save nested hash in redis via a node.js app

问题描述

我正在使用node_redis，我想保存一个结构:

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"},
    ...
}

当前，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

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

是否可以将此结构嵌入到另一种结构中(用户使用该结构?) 如何设置具有这种结构的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中不对嵌套结构提供本机支持，但是可以使用set + hash对其进行建模(类似于分层树). 哈希最适合存储单个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Redis 惯例 )，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));

，然后使用集合将用户分组为一个名为users的密钥.然后，我可以通过 smembers 命令获取所有用户密钥，并分别使用 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.

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