Do you have experience with localization (or i18n, l10n) with go? I thought, that I could read preferences sent by browser and provide response accoring to request. But I found only few attempts to something like this. Please sent me, if I'm wrong in some ideas.
https://godoc.org/golang.org/x/text/message looks very complicated, documentation is disarranged and sometimes obsolete. It looks that is used only by very small group of people.
https://github.com/gosexy/gettext looks interesting, but if I understand well problem is in call SetLocale. That does not allow me to use two goroutines with different language at the same time if I don't want to synchronize goroutines very often.
https://godoc.org/github.com/nicksnyder/go-i18n/i18n (or something based on this) looks that it should work. I'm going to play with this library, because it looks like the most usable.