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revision 1.99 by benja, Thu Feb 6 01:29:30 2003 UTC revision 1.100 by benja, Thu Feb 6 01:42:22 2003 UTC
# Line 103  a network (as in Lotus Notes [ref]) or w Line 103  a network (as in Lotus Notes [ref]) or w
103    
104  In this paper, we present Storm (for *storage module*), a design  In this paper, we present Storm (for *storage module*), a design
105  dealing with these issues. Storm is a library  dealing with these issues. Storm is a library
106  for storing and retrieving data as immutable  for storing and retrieving data as *blocks*, immutable
107  byte sequences identified by cryptographic content hashes  byte sequences identified by cryptographic content hashes
108  [ref ht'02 paper], unifying the namespaces of  [ref ht'02 paper]. Storm provides services
109  private data and documents published on the Internet by  for versioned data and Xanalogical storage [ref],
110  using the same identifiers for both. Storm provides services  built on top of blocks.
 for versioned data and Xanalogical storage [ref].  
111  The Storm design, a hypermedia system built to make use  The Storm design, a hypermedia system built to make use
112  of the emerging peer-to-peer search technologies,  of the emerging peer-to-peer search technologies,
113  is the main contribution of this paper.  is the main contribution of this paper.
114    
115  Currently, Storm is partially implemented as a part of the Gzz  Currently, Storm is partially implemented as a part of the Gzz
116  project [ref], which uses Storm exclusively for all disk storage.  project [ref], which uses Storm exclusively for all disk storage.
117  Gzz provides a general platform for building hypermedia applications upon.  Gzz is an implementation of Ted Nelson's zzstructure [ref],
118  On top of Storm, we have built a system for storing mutable, versioned data  providing a platform for hypermedia-aware applications.
119  and an implementation of Xanalogical storage [ref].  The peer-to-peer functionality
   
 Our current implementation has been used for local disk storage  
 and with a central repository. The peer-to-peer functionality  
120  is in a very early stage and not usable yet.  is in a very early stage and not usable yet.
121    
122  .. [General figure of Storm, i.e. application layer, storm layer,  .. [General figure of Storm, i.e. application layer, storm layer,
# Line 141  is in a very early stage and not usable Line 137  is in a very early stage and not usable
137    
138  This paper is structured as follows. In the next section, we describe  This paper is structured as follows. In the next section, we describe
139  related work. In section 3, we introduce the basic storage unit of our  related work. In section 3, we introduce the basic storage unit of our
140  system, file-like blocks of data identified by cryptographic hashes.  system, file-like blocks identified by cryptographic hashes.
141  In section 4, we discuss our implementation of Xanalogical storage  In section 4, we discuss our implementation of Xanalogical storage
142  on top of the block system. In section 5, we discuss application-specific  on top of the block system. In section 5, we discuss application-specific
143  reverse indexing of blocks by their content, essential for many applications.  reverse indexing of blocks by their content, essential for many applications.

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