Feedback Requested on URL Shortener Microservice

Code Feedback
1

Hi there, I’d be happy to hear your feedback on my URL Shortener Microservice!

I’m using Node, Express, MongoDB, Mustache, Bootstrap, HTML, CSS.

I’m particularly interested in routes, Mongoose, and modularity. Could I improve my project with these? How? I haven’t been able to figure out how Mongoose, for example, would be useful given that the project is pretty small, but I’m interested in your thoughts on best practices.

GitHub

Heroku Link

Note that I display a page instead of a JSON object with the shortened URL, but I put a comment in my code for how I could just return an object, per the user stories.

Thanks in advance!