Just like domain name registrations, SSL certificates need to be renewed regularly. Let’s look at ways to monitor SSL expiry, from using a hosted service like https://prettygoodping to doing it ourselves in curl, Go and Perl.
I’ve been using perlimports a lot at $work. I’m generally quite happy with it, but perlimports can get confused by modules which are being dynamically used. Let’s look at an interesting strategy to fix this.