Confusing behaviour when embedded attachment is deleted

[Arantor]

Uh... is it? See attached.

That attachment produces a 404 when clicked, but it's still in the attachments table.

[Arantor]

Hm, seems like it might be fixed now, now I see an image and it's not 404ing.

[Sir Osis of Liver]

Server glitch?  Works for me.  Original problem was only in preview, posting was normal.

[Steve]

So this topic is solved? I can't keep up with you coders. 

[Sir Osis of Liver]

The preview problem seems to be fixed, but Arantor may have found another glitch.

[Arantor]

There was definitely a glitch when it was announced as fixed on here - I think there may be some residual issues with old attachments vs the mod site, but I have no solid feelings on what causes what yet.

[Arantor]

I am still seeing glitches, e.g. in https://www.simplemachines.org/community/index.php?msg=4127833 there is an attachment, it has a thumbnail, but opening the full size attachment gets a 404.

And the image is attempting to embed inside the post - and failing also with a 404.

Something isn't right here.

[FrizzleFried]

I am still seeing glitches, e.g. in https://www.simplemachines.org/community/index.php?msg=4127833 there is an attachment, it has a thumbnail, but opening the full size attachment gets a 404.

And the image is attempting to embed inside the post - and failing also with a 404.

Something isn't right here.

What is strange is that I see that post fine.  The behavior seems to be a DELAY between when the post is made and when the image actually appears for folks.  I saw that happen in "real time" with an attachment earlier (and commented about it as did others).

The attachment didn't show for me... for minutes... then all of a sudden... it did.

Here is what I see at the link above:

You cannot view this attachment.

[Arantor]

Weird, it's there now for me too. Which really doesn't make sense, because 10 minutes after it was definitely 404ing for me and offhand I can't fathom why that would happen, not even related to background tasks happening.

[FrizzleFried]

When I saw it in real-time... a post was made a minute or two before I saw exactly what you saw.  I fuddled around for a couple minutes hard refreshing, etc... but it would not come up.  So I posted about it.  Someone else posted they saw the same thing... then... a few minutes later... there it was... for both of us.

Let me see if I can find the post/response.


EDIT: Here it is - https://www.simplemachines.org/community/index.php?msg=4126787

[shawnb61]

We believe the occasional 404s on this site have been addressed.

[Sir Osis of Liver]

What was causing it?

[shawnb61]

Site/server side stuff.  Over my head, tbh.

The mod site was impacted as well.  But all appears to be good now.