嵌套键的Redis列表 [英] Redis list of nested keys

问题描述

我已将以下格式的列表保存在Redis数据库中.

I have saved lists in following format in my Redis database.

键:内键1:内键2:内键3

key:inner-key1:inner-key2:inner-key3

例如，我的数据库如下所示:

For example my database looks like this:

A:B:X:val1

A:B:X:val1

A:B:Y:val2

A:B:Y:val2

A:C:X:val3

A:C:X:val3

A:C:Y:val4

A:C:Y:val4

如何获取密钥B的内部密钥? 我正在尝试使用 按键A:B:*， 但是其结果是整行"A:B:X:val1"和"A:B:X:val2". 我所需要的只是获得第一个"A:B"内键.格式为[X，Y].

How can I get inner keys for key B? I was trying to get it using KEYS A:B:*, but result of this are whole lines "A:B:X:val1" and "A:B:X:val2". All I need is to get only first inner key of "A:B" in format for example [X, Y].

推荐答案

您可以使用 Redis哈希以达到相同的效果:

You can use Redis Hash to acheive the same:

您的密钥是

    A:B:X:val1
    A:B:Y:val2
    A:C:X:val3
    A:C:Y:val4

您可以将密钥另存为

    HSET A:B  X val1
    HSET A:B  Y val2
    HSET A:C  X val1
    HSET A:C  Y val2

现在您可以按需获取A:B的所有键

Now to get all keys for A:B you can do like

    HKEYS A:B           this will return [X Y]

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