When you come across an old piece of code, that's not written well or that could've been written better, what do you do?

Comment your answer if none of the following options are applicable.

Do you have live monitoring and logging in production for Node.js? What do you use?

Happy holidays, everyone! I'm doing some research on live monitoring and logging services for Node.js, like PM2 . Do you have a setup for this in production? What service do you use?

Does versioning make sense in a SaaS product? What are the benefits of using something like semver, in a SaaS?

Currently, we don't use any sort of versioning in our SaaS. Is it too late to start versioning? Why do we need versioning?

What learning resources do you use for Machine Learning/Deep Learning?

Rust Developers, what do you love most about Rust and why? And what did you build with it?

I'm interested in getting into Rust, not for anything specific but just to learn something new. So I'm trying to get a little perspective on it.