Since last week I started having a weird issue with my app hosted in Azure using AppService with Linux containers with .NET 8 app on it. Suddenly users started getting 500 internal server errors from time to time, let’s say 1 out of 1000 requests was giving it. It’s worth mentioning that there were no changes applied to the app during that time. Memory and CPU usage levels are below 20%.

I’ve checked app insights, enabled diagnostics for this app service, but also don’t get any errors in there, so it seems like it’s happening the level above somewhere, but not sure how to get there to check it. App service plan doesn’t give any logs either. I tried to scale up, but still getting errors. I feel helpless. Any ideas what to do?