[Tilesathome] Tileset files

[spaetz]

On Tue, Sep 16, 2008 at 03:12:21PM -0400, Matthias Julius wrote:
> spaetz <osm at sspaeth.de> writes:
> > Again, let's be very careful about what we want here. Everything
> > multiplies with 16mio bytes times the number of layers we have.
> 
> Hey, you just said you are in the process of getting a new server with
> plenty of disc space ;-)

:-P. I will scare them away if I tell them that Matthias wants 16GB * 4 layers in order to save the birthdays of all renderers :)
 
> We don't need to go overboard with that.  There can be a lot of
> information stored in 1 KB.  I would start with the OSM data
> timestamp, username and client-id.  We could also store X, Y, Z and
> layer so we don't need to rely on the filename to convey that
> information.

Feel free to come up with a sensible scheme. It would be good if the uploader client id could be at some defined location as before though. This is the one internal variable that the server sets itself (the client doesn't and shouldn't know it id number and the server doesn't trust the client to insert the correct one). So if the server can just write <client id> at bytes 4-8 rather than parsing the metadata and rewriting the whole shebang, that would be good.

spaetz