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revision 1.193 by tjl, Sat Feb 15 18:18:14 2003 UTC revision 1.194 by tjl, Sat Feb 15 18:21:39 2003 UTC
# Line 123  synchronizing irregularly with a central Line 123  synchronizing irregularly with a central
123  a network of servers (as in Lotus Notes) or directly with each other  a network of servers (as in Lotus Notes) or directly with each other
124  (as in Groove [groovesurl]_). In each of these cases, a user should be able  (as in Groove [groovesurl]_). In each of these cases, a user should be able
125  to work on the version at hand and then either merge it with others  to work on the version at hand and then either merge it with others
126  or fork to a different branch.  or fork to a different branch, as well as rollback the current changes
127    or look at differences between versions *without network connectivity*.
128    
129  In this paper, we present Storm (for *STORage Module*), a design  In this paper, we present Storm (for *STORage Module*), a design
130  dealing with versioning and dangling links. Storm is a library  dealing with versioning and dangling links. Storm is a library
131  for storing and retrieving data as *blocks*, immutable  for storing and retrieving data as *blocks*, immutable
132  byte sequences identified by cryptographic content hashes  byte sequences identified by cryptographic content hashes
133  [lukka02guids]_. Additionally, Storm provides services  [lukka02guids]_. On top of the block layer, Storm provides services
134  for versioned data and Xanalogical storage [ted-xanalogical-structure-needed]_.  for versioned data and Xanalogical storage [ted-xanalogical-structure-needed]_.
135  We address the mobility of documents by block storage  We address the mobility of documents by block storage
136  and versioning, while we use Xanalogical storage  and versioning,
137  to address the movement of content between documents (copy&paste);  and the movement of content between documents (copy&paste)
138    by Xanalogical storage.
139  Fig. [ref-storm_layers]_ provides an overview of Storm's components.  Fig. [ref-storm_layers]_ provides an overview of Storm's components.
140    
141  .. uml:: storm_layers  .. uml:: storm_layers

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