如何在firebase中实现友好系统

我刚刚开始与firebase合作开发我正在开发的一个应用程序的后端，但有一件事我想不通，那就是如何处理交友系统。您将如何在firebase这样的服务中实现此功能？

每个用户都可以有一个ID（如果您授权用户，您可以使用auth.uid作为ID）。在Firebase中，对于每个用户，您将列出该用户的好友的所有ID。您还可以为与此人交过朋友的人设置一个类别

Firebase可能如下所示：

users
|
--- #00922784
|   |
|   --- friends
|   |   |
|   |   --- #19324819
|   |   |
|   |   --- #01993882
|   |
|   --- followers
|       |
|       --- #19324819
|
--- #19324819
    |
    --- friends
    |   |
    |   --- #00922784
    |
    --- followers
        |
        --- #19324819

--- #19324819
    |
    --- friends
    |   |
    |   --- #00922784
    |
    --- followers
    |  |
    |  --- #19324819
    |
    --- name
        |
        --- TimothyS

等等

您还可以存储此人的姓名，如下所示：

users
|
--- #00922784
|   |
|   --- friends
|   |   |
|   |   --- #19324819
|   |   |
|   |   --- #01993882
|   |
|   --- followers
|       |
|       --- #19324819
|
--- #19324819
    |
    --- friends
    |   |
    |   --- #00922784
    |
    --- followers
        |
        --- #19324819

--- #19324819
    |
    --- friends
    |   |
    |   --- #00922784
    |
    --- followers
    |  |
    |  --- #19324819
    |
    --- name
        |
        --- TimothyS