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revision 1.231 by tjl, Mon Nov 10 19:24:48 2003 UTC revision 1.232 by tjl, Mon Nov 10 19:32:15 2003 UTC
# Line 288  every day or it will not be accessible. Line 288  every day or it will not be accessible.
288  In edition-based updating, a version's URI is the document's id  In edition-based updating, a version's URI is the document's id
289  concatenated with a version number. Version ``n`` then links to  concatenated with a version number. Version ``n`` then links to
290  version ``n+1`` using an ``<img>`` link. The image will not show until  version ``n+1`` using an ``<img>`` link. The image will not show until
291  version ``n+1`` is actually inserted into the system; thus,  version ``n+1`` is inserted into the system; thus,
292  when the image does show up, the user knows that they should click  when the image does show up, the user knows that they should click
293  on it to get to a newer version of the document.  on it to get a newer version of the document.
294  In Freenet, files only stay online as long as they are  In Freenet, files only stay online as long as they are
295  requested regularly; keeping a copy on your harddisk  requested regularly; keeping a copy on your harddisk
296  does not keep a page alive.  does not keep a page alive.
# Line 309  The mapping is destructively updated upo Line 309  The mapping is destructively updated upo
309  update message that is  update message that is
310  signed with the appropriate key and contains a timestamp  signed with the appropriate key and contains a timestamp
311  newer than that of the current version.  newer than that of the current version.
312  In CFS, version and other information is stored only  In CFS, information is stored only
313  as long as the publisher regularly requests it to be kept;  as long as the publisher regularly requests it to be kept;
314  information about past versions is not stored at all.  information about past versions is not stored at all.
315    
316  In *OceanStore* [kubiatowicz00oceanstore]_,  *OceanStore* [kubiatowicz00oceanstore]_,
317  an Internet-scale distributed data store that,  an Internet-scale distributed data store that,
318  based  based
319  on the Tapestry [zhao01tapestry]_ overlay,  on the Tapestry [zhao01tapestry]_ overlay,
320  allows users to access their files  allows users to access their files
321  from different locations,  from different locations.
322  every document has a  Every document has a
323  *primary replica*, a small set of servers that  *primary replica*, a small set of servers that
324  maintain the current version of the document.  maintain the current version of the document.
325  To make the connection between a document and a version,  To make the connection between a document and a version,

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