[OSM-dev] Tirex vs Renderd

Jochen Topf jochen at remote.org
Mon Apr 19 16:44:25 BST 2010

On Mon, Apr 19, 2010 at 05:26:18PM +0200, Jonathan-David SCHRODER wrote:
> So.. If I can sum up my yet unmet requirements regarding mod_tile/renderd,
> those are :
> - easy on the fly max zoom level change without any application restart

Tirex currently allows any zoom level, if you ask for zoom level 3172 it will
do that. I am working on making the zoom level range configurable, so Tirex
will check this in the future.

There is a limit of what can be done sensibly with the current metatile
filename scheme that needs to be addressed at some point.

> - easy URL scheme customization

Can be done with mod_rewrite or so.

> - easy way to implement middleware code that allows pre-rendering stylesheet
> transformations thanks to input parameters received such as URL scheme
> parameters and other disk files/database stored info

Thats going to be difficult.

I am not sure the whole tile rendering and caching stuff makes sense for an
environment with possibly hundreds of map styles. Maybe you can just use UMN
mapserver and WMS with a small PHP mapscript wrapper. That can do all that.

Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/  +49-721-388298

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