Are you sure about Go's garbage collector doesn't have pauses? AFAIK they are worse than modern Java's garbage collector [1].

I'm not sure it's even better than Java's, especially for modern ZGC (and you can choose your GC in Java). Definitely less configurable. I would say most of online comments about Java's GC are long outdated.

For example, in web servers a lot of work is request-response, so it's convenient to utilize generational GCs (so that each request data would fit into "young" generation). Similar to arenas, but without code changes. Go's GC is not generational though, so you should care about allocations.

https://codemia.io/blog/path/The-Evolution-of-Garbage-Collec...