On 17.05.2012, at 11:12, Klaas Freitag <frei...@owncloud.com> wrote:
> Hi, > > one of the biggest shortcomings of the sync client currently is that it does > a full scan of its the ownCloud directories via webdav to query the last > modified times. That causes load and other trouble. It would be great to find > out if something has changed server side more cheaply. > Completely agreed. The current approach doesn´t work with lot´s of files anymore. > We have the file system cache which also has the mod times in the database. > My idea is now, instead of querying every single file, I just issue a HEAD > request on the top sync directory and get the latest modtime of all files in > that dir back. If that is younger than the one I know, I have to do a sync. This should be easy doable. > I know that it could be even more cool, ie. delivering the list of files back > etc. but lets do small steps. Doing just one HEAD instead of querying the > whole tree already will be great. > > The implementation seems easy: Just get all database id's of the fscache > table entries below the top directory of the sync dir and do kind of > SELECT MAX(mtime) FROM fscache WHERE id in ( list-of-all-ids-in dir ); > That should be fast enough. > > My question now is: How do we do that? Should we have another app called > /files/sync? Or do we want to enhance the WebDAV server to be able to do the > described logic if a HEAD request on a dir comes in? > > I think the latter is more "within the concept" of doing the sync via WebDAV, > OTOH a sync app could be useful anyway for other sync related server support. Both is fine I think. We will need some additional REST calls for the sync client anyways if we want to support new features. Examples are: Accessing the history via the sync client, make it possible to share files from the sync client or control the encryption. We need to build a new custom REST API for this anyways. So an additional call to fetch a list of changed files is easy and fit´s into this concept. Frank _______________________________________________ Owncloud mailing list Owncloud@kde.org https://mail.kde.org/mailman/listinfo/owncloud
