Well, just use the new generation of "microservice frameworks" in Java. I personally believe that it is a much better language and ecosystem, and wouldn't both

Well, just use the new generation of "microservice frameworks" in Java. I personally believe that it is a much better language and ecosystem, and wouldn't bother using Go which has way more boilerplate, has pretty bad expressivity (so that libraries/frameworks will suffer from a usability perspective, e.g. look at JOOQs, a completely type-safe SQL query builder) for negligible benefits.