@maximenajim I also started searching for this in the past days and am currently experimenting to come up with a Spring Boot - React Starter Kit. Would you care sharing information in this thread if you find something interesting?
Now in first tests that works, but it's currently too slow (will look into that before going on with other issues). From what I've read one of the problems is that Nashorn is not thread-safe and thus the pre-compiled react can't easily be shared across multiple threads (some ideas about perf in the link you've also posted).
[Update: as mentioned in the linked post once all workers have warmed up performance is good. With a small pooling solution the warmup-run should not affect end-users.]
FWIW, some of the links I find interesting in that context: