Thanks for the note, Don. I’ve been nervous about scaling because its so hard to test. Tools like “bees with machine guns” just test hitting your web pages. It’s a lot harder to test realistic load. Nathaniel Felsen points out that I can also scale vertically for a while.
I’ve made use of the AWS Loft in San Francisco, but the Loft engineers are not always that experienced when it comes to real scaling issues.
I’ve been getting a remarkable amount of mileage from a t2.micro instance. It has not gone down in the many months I’ve been using it and it is currently handling all of the CPU I need (I distribute database operations over RDS/Postgres and DynamoDB). So as Nathaniel points out, I could also scale up to a t2.medium and then t2.large.