I've seen various numbers, and it apparently depends on the workload. I'm not worried about most of the instances that run the service. But I am concerned about the main Postgres instance and the Redis instance. Unfortunately, it's not something I can really test ahead of time. And it's not like I can not patch the instances. So, fingers crossed, and also hopefully I'll be able to do the upgrades over the weekend, when there's less traffic, in case there's a problem.

Thanks,

Mark