[Standards] mobile optimizations

Tobias Markmann tmarkmann at googlemail.com
Wed Feb 20 16:28:53 UTC 2008

On Wed, Feb 20, 2008 at 5:15 PM, Peter Saint-Andre <stpeter at stpeter.im> wrote:
> juha.p.hartikainen at nokia.com wrote:
>  > Hi!
>  >
>  > Regarding optimization we get good figures from compression zlib (at
>  > least good start).
>  >
>  > Also in some comments:
>  >
>  > Optimizing roster: Good start, but also should be considered vCard based
>  > traffic,
>  > which causes traffic load. Caching the data to devices is good start and
>  > resurrect the
>  > xep-0150 could be easiest and straight forward action. Also adding use
>  > case "Caching and
>  > retrieving vCard" with etagging. Of course Pubsub could be one approach
>  > for vCards,
>  > but requires extra implementation.
>  Thanks for the suggestions. Etags (or something very much like etags)
>  will definitely be on the agenda for the XMPP devcon this weekend,
>  because we can use it for rosters, vCards, and perhaps other domains too.
>  Peter

For vCards it sure will work but doesn't User Profile obsolete vCards?
If I see it right anything PubSub based doesn't need ETags since just
polling services need it. With pubsub you get informed on change.


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