Whats yoir architecture how fast you scale up and down, can you handle 10million requests per minute without warm up on scaled down infrastructure ? How long w

Whats yoir architecture how fast you scale up and down, can you handle 10million requests per minute without warm up on scaled down infrastructure ? How long will it take to scale out? How easy it is to write event driven architecture, can ppl pick up the code in two days and become efficient? Java has issues that other languages requiring a bit more grunt work dont have.