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11/25/25
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Comment on [#11590] Kolab backend: IMAP cache does not get updated
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>> This is currently the expected behavior as the implemented >> synchronization strategy is pretty dumb. The old code had no >> synchronization strategy and so it always synchronized the data on >> access. You should be able to go back to the old behavior by >> modifying Horde/Kolab/Storage/Synchronization.php. Add a "if (false >> && ..." to both conditionals present in that file. Does that revert >> back to the expected behavior? > > Ok, I understand why the old behavior is inappropriate for many > folders "subscribed" at the same time. The new strategy is quite a > change to H4, we probably should have mentioned it in the changelog. > >> I lack a final plan concerning the synchronization strategy > > For plain dumb IMAP, what about syncing the folders every XX minutes > (+ random threshold to distribute the server load a bit better)? Also > on login and folder "subscribe". > The sync time should be user configurable, may be 5 minutes as default. > >> What describe - concurrent access with two clients to the same >> folder - is not the default case after all. At least not for >> personal folders. > > For the "groupware" case it's the default. For example a secretary > managing appointments for another person. >
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