[gpodder-devel] my.gpodder episode sync design problem: "since" values
- From: neal at walfield.org (Neal H. Walfield)
- Date: Fri, 01 Jul 2011 15:29:42 +0200
At Fri, 1 Jul 2011 15:35:52 +0300,
Dov Feldstern wrote:
> 3. n900 at 9:18 : connects to network, stored actions are uploaded; so
> the action from step (1) is now uploaded, *but its timestamp is still
> "9:14"*! Since "9:14" is earlier than the new "since" value ("9:16"),
> the episode action will never get synced back to the desktop...
> So, I think that the "timestamp" stored with actions is *not* the
> value which should be used for purposes of comparing with "since"
> values and syncing; rather, an "upload-timestamp" should be stored
> server-side, which would serve for this purpose.
Why not use Lamport timestamps to do the ordering?
http://en.wikipedia.org/wiki/Lamport_timestamps
Neal
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