Bug report #21037
Spurious WMS Requests when adding a new layer
| Status: | Open | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Web Services clients/WMS | ||
| Affected QGIS version: | 3.4.3 | Regression?: | No |
| Operating System: | Easy fix?: | No | |
| Pull Request or Patch supplied: | No | Resolution: | |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 28856 |
Description
If I add a WMS layer, QGIS requests it and renders it.
If I add a second WMS layer, QGIS requests the new layer, but also requests the OLD layer too (as a separate GetMap request).
If I add a third layer (from a completely different service), QGIS sends requests off separate GetMap requests for all THREE layers.
There's no panning/zooming/resizing etc. going on here.
Surely QGIS should be using the cached versions of the earlier layers when a new layer is added? I can see this wasting a lot of bandwidth at both ends.