[QGIS-Developer] QGIS WMS provider firing too many requests !? Now: WMTS

[Richard Duivenvoorde]

On 2/26/21 10:35 AM, Richard Duivenvoorde wrote:
> As said, I haven't checked WMTS precisely (I did for WMS) but try:
> https://geodata.nationaalgeoregister.nl/wmts?VERSION=1.0.0&request=GetCapabilities
> and open the layer 'opentopo'.
> 
> For my mapcanvas of 1000x1000 pixels (theoretically 4x4=16 tiles of 256x256pixels, but say 6x6=36). 
> If I zoom in I fire a >176 requests.
> I would be Ok to have no prefetching at all for services, just to save the earth a little :-)
> 
> I agree that 'polluting' the interface with options is a good argument. An option then would be to make it a hidden/advanced setting, which I can disable (or others have to enable... how user/environmental friendly do we want to be).

I decided that it was not wise to defaulting to requesting that much tiles, not even for WMTS, and created an Pull Request for it:

https://github.com/qgis/QGIS/pull/41953

I hope I do not offend people with this.
Alternative would be that we keep the prefetching defaulting to true, and make it possible to set it to false.

Regards,

Richard Duivenvoorde