The mainstream always lags behind significantly in every aspect of life. If everyone's using it, then you have little competitive advantage using the technology

The mainstream always lags behind significantly in every aspect of life. If everyone's using it, then you have little competitive advantage using the technology. Go would be one of the first things I'd reach for if there's any chance server-side concurrency would be involved. The language is minimalistic and unsurprising to the extreme. A joy to program in and use.