Strategies for concurrent updates

[Guillermo López]

Hi,

I'm testing a simple SabreDAV deployment (only two users) with delegated accounts to share data (since I couldn't find a way to enable per-calendar sharing, http://sabre.io/dav/caldav-sharing/).

We are finding ourselves overwriting each other data because of concurrent updates too often. This is really preventing us from collaborating properly through SabreDAV. So my questions are:

• Which component is responsible for proper concurrent updates? Client applications or the server?
• Should we be using any specific client to prevent this situation? Currently we are using Lighting and DAVdroid.
  
• Is there any configuration in the server that can be tuned to offer more reliability?

Thank you in advance,

Guillermo

[Guillermo López]

Hello again,

I wonder whether I should be using calendar sharing instead of account delegation.

The calendar sharing plug-ins are enabled in my server, but I can't find a way to share a calendar through the web interface. Which tables do I have to modify in the database to share a calendar?

Thank you,

Guillermo