[OSM-dev] How can I force refresh of map tiles after move to a new backed?

[Maarten Deen]

On 2020-12-29 09:30, Mateusz Konieczny via dev wrote:
> Poland (and Europe in general) recently started using new backed for
> tile
> delivery from OSM servers.
> It is much faster and responsive so thanks to whoever handled this
> (hopefully it is not too expensive).
> 
> But sadly I see no way to force tile refresh, old method of clearing
> browser cache no longer works.
> 
> See for example complete motorway at
> https://www.openstreetmap.org/#map=19/52.20141/21.30912
> when I zoom out to
> https://www.openstreetmap.org/#map=12/52.20141/21.30912 [1]

It showed under construction when I first loaded it, then I did CTRL-F5 
and now it shows as completed.
My browser is firefox, YMMV.

Recently I have had more occasions where I updated something and I kept 
seeing the old version and I had to use CTRL-F5 to see the new version. 
In the past just a reload (CTRL-R) was sufficient. I wasn't aware that 
there was a new backend. If this is related to that I would like to ask 
that this is looked at as to why this happens.

Regards,
Maarten