多空間ディレクトリ(MSD)の自動的な共有

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To share objects in multiple users is an absolute requirement. Sharing objects among multiple users can be extremely difficult in a largely scaled directory based on tree structure. There are some other approaches which alleviate the sharing difficulty by providing attribute-based access. Attribute-based access is efficient to discover a set of related objects in large-scaled distributed systems, but difficult to locate one object. There are at least two reasons resulting in the sharing difficulty. For the users who want to share some objects elsewhere, they have to know where the objects are placed exactly and go there to access them ; For the users who want some objects to be shared by their fellows, they have to make efforts to notice or distribute the objects to everyone of their fellows. How to provide convenient sharing mechanisms is still a challenging issue. Multi-Space Directory (MSD) is a new directory structure we proposed. It presents several outstanding characteristics over traditional tree-structured directory. Automatic sharing is one of them. By automatic sharing, we mean that when an object should be shared by some users, the object automatically appears in the places where those users are. For example, in the case of Figure l, the objects in /bulletin should be broadcasted to all users Min, Joe and Jim under /home, and the objects in /home/joe~jim are shared by the users Joe and Jim. By automatic sharing, the objects in /bulletin automatically appear in all user's home /home/min, /home/joe and /home/jim, and the objects in /home/joe~jim automatically appear in the homes of Joe and Jim. Automatic sharing of MSD is realized by embedding sharing strategies in directory structure.
一般社団法人情報処理学会の論文
1995-03-15

多空間ディレクトリ(MSD)の自動的な共有

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