Dear Geoserver community,
here at the Climate Data Center of the University of Hamburg, we try to
visualize radar data of precipitation around Hamburg.
https://icdc.cen.uni-hamburg.de/wetterradar/index.jsp
Therefore, I reproject the original netCDF file to a geotiff in
EPSG:4326 (via gdal_translate) and add this geotiff via the geoserver
API to an Image Mosaic every 30s with new data (and delete the ones
older than 1 hour). I show these data as an WMS TiledLayer by means of
leaflet (EPSG:3857). My problem is, that it takes around 10 sec when I
zoom in and that makes our server real slow, especially when there are
lots of users on the site. Caching helps a bit, but since there are new
data every 30 sec that does not help a lot.
Is there a way to speed up this up?
What takes so much time? The reprojection from 4326 to 3857?
I tried to provide the geotiff in 3857 as well, but I did not manage to
see anything in leaflet. So I sticked to 4326 because this worked.
Actually, I do not need to use an Image Mosaic because I only have one
5.4MB geotiff with 881x800 Pixels. But I don't know if I can provide
this kind of data extending every 30s providing a time dimension with
another kind of data type in geoserver?
Btw: I request tiles of 1024x1024 from geoserver via WMS, before I tried
256x256, but that created too many simultaneous requests to our server.
Do you have a hint for me?
I of course can provide more information in case you need more.
Thank you very much for your time!
Best regards,
Remon Sadikni
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