Thanks! The c5 instance type is about 10-15% faster than the m5, but the m5 has twice as much memory. So if memory is not a concern then switching to c5 is bot

Thanks! The c5 instance type is about 10-15% faster than the m5, but the m5 has twice as much memory. So if memory is not a concern then switching to c5 is both a little cheaper and a little faster. You shouldn't need the c5n, the regular c5 should be fine for most use cases, and it is cheaper. Nginx in front of nodejs sounds like a solid starting point, but I can't claim to have a ton of experience with that combo.