If you're in the web sector, definitely give a try to wasm. Have a go at Rust while you're at it — see what I did there? I'm personally hot for GraphQL because it's a powerful paradigm to model data. Both Go and Rust are incredibly interesting languages, in very different ways. In some ideal world, Go fits in a scaling/efficiency vertical somewhere in-between C and C++ (it's very specific but it basically encompasses…
Unfortunately, the end product isn't very easy to integrate with WASM, but I'm going to keep in mind the possibility from the start next time.
Rust's extra bonus for me is that it can be used to make natively invoked functions that can be used in Erlang/Elixir code with zero risk of taking down the whole VM (which can be done with C).