[OSM-dev] Something wrong with the renderer?

M∡rtin Koppenhoefer dieterdreist at gmail.com
Thu May 5 17:33:54 BST 2011


2011/5/5 Grant Slater <openstreetmap at firefishy.com>:
> Something wrong: no... But the server is completely overloaded yes.
> Apps which scape masses of tiles for offline usage is becoming a big
> problem.
> I've employed some techniques in an attempt to limit the scaper's
> download rate while keeping things responsive to mappers. Token bucket
> rate limiting [2]. There are also some upgrades in the pipeline.

> 1: http://wiki.openstreetmap.org/wiki/Tile_Disk_Usage (In total only
> 1.79% of the theoretical number of tiles have ever been viewed.)
> 2: http://en.wikipedia.org/wiki/Token_bucket


What about changing the tile urls frequently? This could be automated
and synchronized with the start page and would stop those apps quite
fast (at least until they start making the urls in their app dynamic
and synchronize as well).

Cheers,
Martin



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