MethodsStudy the definition and character of metadata, establish the metadata standard and directory service system to execute the data search service.
方法研究元数据的定义与特征，制定元数据标准、然后建立目录服务系统进行数据检索服务。
No bottleneck of centralized service is introduced. All data, including metadata and directory files, are distributed into the whole system to provide high performance and scalability.
系统中没有引入集中的服务器瓶颈，所有的数据、元数据和目录文件都被分散存储在整个系统中，以提供高性能和良好的可扩展性。
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