I am building a high-performance REST API. My goal is at least 10k req/s with less than 400ms latency (while testing locally). Ideally something close to 15-20k. Machine that I use for testing is an AWS instance with 64 vCPUs, 128gb RAM and an ssd, which should be an overkill? The nature of a request I am testing on is the following: I get an identificator, perform mathematical operations on it (modify it in a special way), then add it to a predefined js script, that is stored locally, and return to a user.