[OSM-dev] Rendering Strategy

[marqqs at gmx.eu]

Hello you all,

I just signed-up to this list - hoping to get some help...
Until today, I have launched two simple maps (OpenGastroMap.de and openptmap.org), both limited to the DACH region.

The transparent tiles of openptmap are rendered by Mapnik, using a fixed timetable. That may make sense for tiles which are being looked at frequently, but lots of tiles - especially in higher zoom levels - will not be watched for months. Therefore, I am looking for a method to implement a rendering strategy. For example:

1.: If a tile is requested by a user (and thus served by Apache), it shall be rendered next morning at 5:00.

2.: If a tile gets older than 100 days, it shall be rendered regardless of the time it has been displayed last.

Is there already a mechanism I could use? Or do I have to program it from scratch?

Thanks in advance...

Markus