On Wed, Sep 11, 2013 at 8:04 AM, John Callahan <[email protected]>wrote:
> Part of my question may be academic but, like many technical things, it
> becomes practical when getting into the details. I currently have 20 - 30
> GB used by geowebcache for SRS 900913 (total for about 12 raster layers).
> When a request comes in using 3857, it will not use the 900913 cache. To
> use cache for 3857, I would need to duplicate the cache for each layer. It
> comes down to which is used more often and if I want to support caches for
> both.
>
> I agree that I can alter the default SRS for geowebcache anytime. I would
> think 3875 should be the default and we should move away from 900913,
> unless everyone is still using 900913 much more than 3857.
>
Meh, my current perception is that both are used, 900913 more used by the
pratictioners, 3857 (not 3875!) more by people paying more attention to OGC
details
(just made a search with google for EPSG:900913, returns 133k results,
EPSG:3857 returns 149k results).
It would be nice to have them both and have some internal transformer that
"canonicalizes" one onto the other to avoid
duplicating the tile storage. Who's going to develop/sponsor it? :-)
Cheers
Andrea
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