Attachments aren't copied on doc updates. And you're forgetting about compaction.
HTH, Paul Davis On Fri, Sep 25, 2009 at 9:29 PM, go canal <[email protected]> wrote: > Hello, > another question. here is the use case: > - a group of 10 engineers working on a project, > - total files created over 12 months: 500 > - average update per file 15 times > - average file size 20MB > - file format: MS Office, PDF, CAD drawings. > > I thought CouchDB is designed to support this type of applications but is it > correct to say that, every time there is an update to a doc, CouchDB will > create a new version of the (whole) document ? > So can I say the total storage will be 500 * 20MB * 15 = 150GB without > counting other overhead ? > > > Another question, if I only modify one field, is the attachment also copied > into the new version of the document ? > > I also saw this message posted almost a year ago, talking about if CouchDB is > suitable for frequent small writes application, and it seems that some client > side buffering is needed : > http://markmail.org/message/klrbkh36ivxg46ax > > Is it still true today ? > > rgds, > canal > > > >
