Link to a page where the issue can be seen: you can't see the error on screen but it goes to the log file
I expected to see: no issues with the site
Instead, I got: the following error being logged repeatedly even after raising the memory limit first to 256M then to 320M. I replaced the client account name in the paths below with ------. Otherwise this is exactly what shows up in the WooCommerce fatal-errors log:
Does it cache the entire postmeta table, not just the rows with relevant keys, every time? Such that all the meta for all the WC orders gets cached whether needed or not? That could explain the issue but having to buy a bigger server to solve that v. having a smarter caching aaproach seems expensive.
Ok, in that case, we'll need to examine the custom fields that are involved here.
Can you please share the temporary admin login details of the website? I'll also need your permission to download its clone/snapshot, to troubleshoot this on a different server too.
Note: Your next reply will be private and making a complete backup copy is recommended before sharing the access details.
There is a lot of cusotmer data on this server so not sure I can share access / allow a clone. I'll check with the client. However, I haven't had a memory exhausted error in a few days. I think the memory problem was caused by a UPS Shipping plugin, not by Toolset even though it got logged as a Toolset error in the log. The UPS Shipping Plugin provider issued an update and it seems to have solved the memory issue.
I will keep an eye on it for a few days and if there are no more errors you won't need access and can close this ticket.