[Tilesathome] Tiles at home unavailable all Monday

[Matthias Julius]

"Nic Roets" <nroets at gmail.com> writes:

> Splitting T at H into different servers only increase complexity and if
> the tile server that talks to a database on a different machine, it
> makes it more likely that tiles aren't being served because one of the
> machines are down / misconfigured.

Because requirements on the server is only to increase.  I don't know
how much potencial there is for optimizations.  But I expect demand on
the server only to increase.  A network of servers might be easier to
scale up.  And if anyone has a decent enough server to dedicate to t at h
that would be sufficient for the next year that's fine, but I wouldn't
expect anyone to. 

>
> I can't understand why it's necessary to query the DB for outgoing
> tiles. Is it only the 404 (empty) tiles that does this ?

I guess that's all tiles that are either empty (land or sea) or that
havn't been rendered, yet.

Is there a statistics or estimate on what percentage of tile requests
involve the database?  In any case this number should decrease as
blank spots on the map get filled in.

Matthias