I've seen issues with RDS after an update. We were seeing CPU max out; adding more readers didn't help, and in the end, we had to rebuild the entire cluster. Th

I've seen issues with RDS after an update. We were seeing CPU max out; adding more readers didn't help, and in the end, we had to rebuild the entire cluster. This somehow fixed the issue, and CPU use returned to normal levels; we didn't make any code changes to the app.