The lowest layer in the architecture is the mediator layer which performs the data access with the repository.
体系结构中的最低层是中介器层，它执行对库中数据的访问。
This is a specific implementation of the Repository class for Service Registry, which provides the primary interface to the data access layer.
这个类是服务注册中心Repository类的一个具体实现，它为数据访问层提供了基础的接口。
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