e569668, 8 months ago

Regarding image thumbnails, it is quite a mess :( There must be some bugs happening somewhere with the pipeline for caching, and they started being mixed up on kbin.social as well which is worrying

For instance, look at this user https://fedia.io/u/@Facelikeapotato@lemmy.ml almost all of their thumbnails are wrong. Really you can browse https://fedia.io/m/cat@lemmy.world and just look for non-cat pictures. I've seen all kinds like nsfw, git repos, news thumbnails, but here are some examples [1] [2] [3].

I posted a theory here https://fedia.io/m/kbinMeta@kbin.social/t/221067/-/comment/1196287 when I noticed that: it seems to happen a lot on instances that go down often or don't respond quickly, so my guess was it's having trouble getting a response, and then it just fails and, potentially, uses the next thumbnail value it gets. That's based off of the thumbnails for nearby entries being similar, as I posted in that comment the one that was wrong was using the same image as a post 31 seconds after it was made

As I posted here https://fedia.io/m/fedia/p/66268 I notice it's easier to browse with show thumbnails turned off, as that stops the 500s when the image thumbnail has issues. Sadly it still happens on some pages and I ~think that's because avatars for users, which are also cached, are shown on that page, like the notifications page, and there is no way to disable displaying user avatars on those pages