I have a busy site running on Azure App Services, we're getting the old

IOException: The process cannot access the file "<path>\NuCache\Nucache.Content.db"

It's on 2+ front end servers, and 1x backoffice server. We've got all the correct load balancing settings

FileSystemMainDomLock

etc (I've checked them a few dozen times now). But it looks like when it gets restarted by app services its booting it multiple times simultaneously, there are several processes running at the same time and they appear to competing for the file lock I tried turning the localDbCache off so it just does nucache in memory and doesn't write to filesystem then it spins up a load of processes and runs out of memory! Doesn't do it on startup/cold boot, but does sometimes on restarts/recycles by app services Has anyone seen this, or something like this before? Running v11.4.2, hosting

inprocess

Worth noting as well this wasn't introduced by 11.4.2 but has been present for most version interations of v11