It’s not Perl but I like uWSGI to run Perl webapps. Starman has recently received some fixes, in it or its deps, not sure, so it might be something worth looking at again. That said, uWSGI is used by a LOT of people, it’s extremely flexible, and it’s been basically bomb-proof for me for several years. You might need to wrap your code in a Plack layer but that is trivial if you know how and semi-trivial if you don’t. More at Re: Most efficient way to run Perl scripts on nginx server?