Reverse cache not working on start pages

[Dingo]

Another update:

I finally deleted /data/nginx/cache/*, and now everything seems to be
working. It looks like Nginx don't bother about what cache timeout I use. If
it is 1 day, as in the example from nginx.org, everything that was cached at
that time will be remembered for 1 day. I have no clue why my startpages was
not working, but they are now that I deleted the cache.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,276670,276673#msg-276673