[jdev] Pubsub items' timestamps

Dave Cridland dave at cridland.net
Thu Apr 14 12:33:12 UTC 2011

On Thu Apr 14 13:17:13 2011, Sergey Dobrov wrote:
> I have working prototype of microblogging service using PEP and  
> Pubsub
> with code name LiJ. Since my initial message I had some problems  
> and I
> wish to solve them but I don't know how I can interact with XSF more
> effectively.
The XSF has a number of lists - there's the standards at xmpp.org list,  
for example, which is geared toward general stanards work, and  
there's various specific lists, such as pubsub at xmpp.org and  
social at xmpp.org, both of which might be relevant here.

> Presence based notifications is good idea but it can't be the only  
> way
> to solve it. I think that we need a possibility to manually request
> items since some time moment. I wish to specify that it's important  
> to
> send not only new items notifications but items retract  
> notifications too.

The problem with sending retraction notices is basically that a  
retraction is a deletion, and once we're storing these, it means  
storing tombstones. I have a general aversion to storing tombstones.

> I have some other suggestions to pubsub protocol based on  
> experience of
> usage by microblogging system development and if you wish to solve  
> the
> problems I will post them here or somewhere you wish.

Here is OK, but social, pubsub, or standards might be best.

Dave Cridland - mailto:dave at cridland.net - xmpp:dwd at dave.cridland.net
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