How to deal with a boss who wants you to work overtime for free?

Me rightnow: Working overtime for free on a sunday morning 😂

Hey guys, who has experience with JPA/hibernate RESTful performance numbers.
Interesting would be:
* persistence operations per second, and the response times
* proportion between read/write for a typical rest service

Rightnow i get ~300ms read, 900ms write at 350 concurrent requests. 75% write operations

I more or less ruled out my custom code, problem seems to be hibernate (of course ...😋)

Stack: jetty, jackson, hibernate, mysql

When you strive to get better and you got battle pass levels to grind through