Java and Go are roughly equal in performance (seriously, look up the benchmarks). If you're using go for it's concurrency primitives, kotlin has equivalents.

Java and Go are roughly equal in performance (seriously, look up the benchmarks). If you're using go for it's concurrency primitives, kotlin has equivalents. I got into Go for a while, but if I'm honest, it's a kludgey language. Half the reason it has taken off as it has is simply down to the fact that it's backed by google.