Should I consider this if I’m using Render or fly.io for my services? Would latency be an issue? On my day job I cluster in the same AWS AZ and don’t realize what impact this would have for an app that may not be colocated.
Really big impact! I'm not sure how fly or render work but if your compute instances are in $city make sure your planetscale instance is too. You shouldn't be far off 'in region aws' latency at the point.