It is interesting that after 6 years from the article publication its key concept of persistent sockets and services starting on demand is not there yet.

For example, on the latest Fedora sshd/nginx/php-fpm still bind their listening sockets themselves rather than receiving it from a process manager. Similarly, if one wants to implement a socket activation in Go, it is not a one-liner that just works, but it requires a third-party library to read the socket passed over stdin.

As a result if for performance/security reasons one needs to customize few service socket parameters, then at best one need to look at application-specific configuration language for socket customization and hope that the developers have not forgotten to expose the socket option that is needed. At worst one uses LD_PRELOAD and similar atrocities to customize the sockets.