[kronolith] Event modification are not synced to remote device using CALdav if horde cache enabled

[Jan Schneider]

Zitat von Giorgio Paolucci <giorgio.paolucci at unipd.it>:

> Hello everybody,
> I have a horde webmail installation 5.2.11 on a clustered debian wheezy
> platform.
> Horde is installed on a 4 node cluster (2 clusters of 2) and clients are
> balanced on a round robin DNS basis; to keep sessions sticky, each node is
> configured with an apache reverse proxy that forwards (based on cookie
> values) requests to apache2 backend instances listening on non standard
> ports on each node. Php caching system APC is installed.
>
> If I enable horde cache (local file system on each node), users who
> subscribe calendars through CALdav don't receive updates on their
> smartphones, or better:  they receive new events or deletion of events,
> but not modifications of existing events made through horde web interface.
> Apache logs show that caldav clients sessions are sticky and each smarphone
> query always the same node of the cluster.
>
> With horde cache disabled, everything works fine. Any clues to investigate
> this issue?

This observation doesn't make much sense to me, because we don't use  
any caching in the CalDAV code or in Kronolith, except for external  
calendar resources like remote calendars of free/busy information.

-- 
Jan Schneider
The Horde Project
http://www.horde.org/