Man pages matching name net::async::fastcgi::psgi in section 3pm:

Net::Async::FastCGI::PSGI.3pm.en	debian 10 / libnet-async-fastcgi-perl
Net::Async::FastCGI::PSGI.3pm.en	debian 11 / libnet-async-fastcgi-perl
Net::Async::FastCGI::PSGI.3pm.en	debian 12 / libnet-async-fastcgi-perl