[OSM-dev] Slippy map's future

[Lars Aronsson]

Nick Hill wrote:

> Currently good tiles are thrown away - tiles which take ages to render. 
> Whilst bad tiles are stored - tiles where the rendering process times 
> out. A renderer starts for every concurrent HTTP request bungung the CPU 

In addition to the lack of cache invalidation, it has struck me 
that even tile cache *hits* are inexplicably slow.  Could it be 
possible to move the Squid to another machine than the one running 
the tile generation?  (Or, rather, to move the underlying tile 
generation away from the machine the fronts and runs the Squid.) 
Then if the tile generator gets overloaded or bugs out, at least 
the Squid could produce the cached tiles at reasonable speed.  
This would mean I could surf around the night before a demo, 
filling the cache.


-- 
  Lars Aronsson (lars at aronsson.se)
  Aronsson Datateknik - http://aronsson.se