I write plain handlefuncs, but so far I have a pretty easy to remember command to restart the server for local development (works as well in Acme, where I'm writing most of my go code as in emacs, where I write templates and vim, where I usually just make really quick edits.) It's Cmd-Tab C-c [up] enter.

Just trying to express the same redneckbeard said: until it is a very thin bottleneck, this should be no problem.