[Tilesathome] t at h, my plans/priorities

OJW streetmap at blibbleblobble.co.uk
Sun Aug 5 17:27:03 BST 2007


On Sunday 05 August 2007 15:15, spaetz wrote:
> OJW,what would you say about getting rid of the meta data base completely 
and
> store the contributor of the tile as the owner of that file (owner being
> the unix account on the dev machine).

Interesting idea, but do we want to create like 200 accounts on dev for just 
that reason?

For example, anyone with a dev account has write-access to the tile 
directories anyway.  So dev accounts allow someone to bypass the 
authentication system altogether.  not a problem currently where it's only 
~20 people that we know, but probably very difficult to manage if it's > 200 
people that we don't know.

Or would you create a set of "tah_ojw" accounts that can't login, and are just 
used for storing usernames in the inodes?



The other question is, how important are the tile stats - and if they're being 
used, is it feasable to create them by trawling through the filesystem 
instead of a database query (this is something we can test today, by trying 
to write such a program and seeing how fast it runs)


p.s. full-circle ;) we used to store meta-info on the filesystem when using 
bandnet server.  


p.p.s. does meta-info actually use any significant database activity, once we 
disable single-tile uploads at z12 and potentially also group lowzoom into 
tilesets?  Surely now the meta-info is like 1/1000 of the database usage of 
blank-tiles (reducing to maybe 1/200 if we do magic on blank-tile storage), 
so moving/discarding meta-info is no longer an optimisation priority?





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