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.
When you find variables which have not been used, you may find yourself asking, “why is this here?” and you may not easily get an answer. Eliminating unused variables can be good for the performance of the code, but also good for everyone else on your team. So, we want to make sure we can remove old bits of unused code and also prevent new cases.