Multi-process servers

With `SO_REUSEPORT`, many processes can listen on the same port at the same time. Running several instances of the Go server might reduce the overhead of Go's `epollwait` as @jbardin points out in [this reply](https://groups.google.com/d/msg/golang-nuts/fuKOlm5CAdM/t7IIplQYqPAJ) on golang-nuts. This issue tracks that idea.

Start by locating the Go server and its socket setup, then read how the current process accepts connections. Investigate the SO_REUSEPORT and epollwait idea described in the issue and determine the expected multi-process behavior. The issue does not define acceptance criteria or tests, so the done state needs clarification.

Written by the indexing model from the issue text.