You are viewing a plain text version of this content. The canonical link for it is here.

Posted to commits@couchdb.apache.org by Apache Wiki <wi...@apache.org> on 2011/11/23 16:11:20 UTC

[Couchdb Wiki] Update of "Document_revisions" by JanLehnardt

Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Couchdb Wiki" for change notification.

The "Document_revisions" page has been changed by JanLehnardt:
http://wiki.apache.org/couchdb/Document_revisions?action=diff&rev1=5&rev2=6

Comment:
add ContributorGroup link

+ <<Include(EditTheWiki)>>
+ 
  == Overview ==
  
  CouchDB does not overwrite updated documents in place, instead it creates a new document at the end of the database file, with the same `_id` but a new `_rev` identifier. This type of storage system is space-wasteful so regular [[Compaction]] is needed to reclaim disk space. Note that the older revisions are not available to [[Views]].