Cameron Moore wrote:
> 
> * [EMAIL PROTECTED] (David Megginson) [2002.12.05 09:45]:
> > Christian Mayer writes:
> >
> >  > The missing functionality is the ability to figure out if the tile has
> >  > changed IIRC.
> >  >
> >  > But that'n no problem - HTTP already supports that. IIRC it send's a
> >  > status code of 302 if the reqested data didn't change...
> >
> > Exactly -- as long as the files are available unpacked in the standard
> > directory structure via HTTP, everything should work just the same.
> 
> We would need to preserve the timestamp for the 302 code stuff to work.

that's no big deal

> I guess _my_ question in regard to rsync is how much would rsync
> actually help in our case.  If a tile is changed -- say we fixed a
> runway or something -- would a diff accomplish anything since we have
> binary scenery files that are also gzipped?  Would the rolling checksums
> that rsync does all end up being different, so we are always downloading
> the entire file anyway?  If this is the case, then rsync's main
> advantage is worthless to us.

I doubt that. 

As mentioned before: for a CD image where only a few files change (and
those are hidden somewhere inbetween 640 MB) it's very well suited. 
But we've got a directory structure that gets "mirrored" on the client
and there are only a few files in it that change - and those files
probably change completely.

CU,
Christian

--
The idea is to die young as late as possible.        -- Ashley Montague


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