Unavailable DB with newer WP Versions (>5.7.5)

So some time ago, we updated to WP 5.9 and before that to 5.8.x and we started to see timeouts or crashes when using the backend of Foyer. Editing channels always ended up in browser error (website unavailable): Either when sorting the slides (via drag&drop) or adding a new slide to a channel. In addition creating a new slide (Image oder Video) also triggered a timeout/unavailable. Or let’s say: The database is blocked by the request/query and no other connection to the DB is possible via the same IP. Hence I had to circumvent this behaviour by using a VPN. But this is not a very feasible solution 😉

I disabled the thumbnail preview in the channel-edit, because it mainly timed out when loading them, but this was not the problem after all. So I checked the plugin-details and Foyer is tested/compatible up to WP 5.7.5. So I downgraded the core to 5.7.5

Well, what can I say: It is not running into a timeout anymore. I can work with Foyer again. But sometimes data is not stored correctly when I edit a channel “fast”, i.e. drag&drop some slides and delete one … and boom .. timeout for like 2-3sec. Then I reload the edit-page and everything is available but the changes were not stored. This seems to be the same source of error, but WP 5.7.5 can recover from it and WP 5.8+ not.

So my uneducated guess is, that there is some thing wrong with the ajax functions (i.e. reorder_slides_over_ajax or remove_slide_over_ajax etc pp)… but I don’t know for sure.

And in WP 5.8 and 5.9 something was changed in the core, that these “unregularities” lead to a timeout/unavailability of the website.

Do you know of this behaviour? Is there something that can be changed or updated?
Can I provide any data or logs that would help?

I’d be happy to hear from someone with a solution 🙂

Thanks in advance.

• This topic was modified 2 years, 2 months ago by lukasspy.