Node.js API Masterclass with Express and MongoDB - Sign & Get JSON Web Token

The video tutorial explains how to handle JSON Web Tokens (JWT) in a Node.js application using Mongoose. It covers creating a Mongoose method to generate JWTs, signing the token with a secret, and setting an expiration time. The tutorial also demonstrates integrating this method into a controller and testing the token generation. Finally, it discusses setting up middleware to handle user login and token verification.

What is the significance of the 'issued at' timestamp in a JWT?

How can you set an expiration time for a JWT, and why is it considered a good security measure?

Describe the process of signing a JWT in the context of the provided code.