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on it to get to a newer version of the document.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on it to get a newer version of the document.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. |
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, |