Man pages matching name mojo::server::fastcgi in section 3pm:

Mojo::Server::FastCGI.3pm.en	debian 10 / libmojo-server-fastcgi-perl
Mojo::Server::FastCGI.3pm.en	debian 11 / libmojo-server-fastcgi-perl
Mojo::Server::FastCGI.3pm.en	debian 12 / libmojo-server-fastcgi-perl