That article is a pretty good overview at the time.

Only one benchmark on one system, but over in day before yesterday's HN thread on this (https://news.ycombinator.com/item?id=44464272), I report a rather significant slowdown in Perl start up overhead: https://news.ycombinator.com/item?id=44467268 . Of course, at least for me, Python3 is worse than Python2 by an even larger factor and Python2 worse than Perl today by an even larger factor.

FWIW, in Nim, you can get a CGI that probably runs faster than the Go of this article with simply:

    import std/cgi                  # By default both ..
    for (key, val) in decodeData(): #.. $QUERY_STRING & POST
      if key == "something":
         do_something(val)

I don't know of a `cgitb` equivalent even in the Nimbleverse. Some of the many web frameworks in Nim like jester seem to have that kind of thing built into them, though I realize a framework is not the same as CGI (and that's one of the charms of CGI).