> > we are using Sabre DAV. Very stable and its performance depends on the > performance of your webserver.
If I may ask, what average rate of requests per second per 1000 users do you have? > We are using Apache-MPM prefork. If your webserver can handle HTTP- > requests for 10k users, it will handle CARDDAV/CALDAV-requests for that > amount of users as well. I was thinking of putting a container behind a proxy (and ideally autoscalling instances) so support for the proxy-protocol would be nice. > If you are familiar with php-programming, you may extend Sabre DAV. > Standard Sabre DAV has its own user database. We extended the SabreDAV > authentication mechanism such that user-credentials are pulled from the > same database that Dovecot is using. > I would prefer ldap