Node.js bearer token authorization?

Question

MongoDB

Guys, I do not understand the very logic of how they work. I use jwt-simple, created a token through the user's _id (unique) and wrote it into the database and it is essentially eternal, i.e. the user enters him and gives him a token and the client in each request in the header shoves it to me, I actually check it on the server if all the rules I give access if not I give the error.
But here they set the task to do it through a bearer token.
1. At the first login, create it for 10 minutes and extend it up to 10 minutes with each request
2. On logout, if it has the all=true parameter, then delete the last token; if false, then delete everything.
And I did not understand the essence of the task, it should be many different tokens for 1 user, or 1 but renew.
Tell me please :)

Answer 1

Start by reading https://jwt.io/
When you understand what jwt is, you will no longer have a question: it should be many different tokens for 1 user, or 1 but renew.
Basically, you're doing almost everything right, but this:

through _id (unique) the user wrote to the database and it is essentially eternal,

The easiest way refer to : https://github.com/auth0/node-jsonwebtoken