Q:

User authentication with JWT in NodeJs with postgresQL?

I have been looking into user authentication with JWT in Node.js but everybody seems to be using mongoDB. I want to do the same thing with postgresQL and sequelize.js. Any resources or sample projects you guys know?

A:

1- https://www.youtube.com/watch?v=yvviEA1pOXw
Randall Degges has this pretty good video about the basic concepts about user authentication. While this video contains session authentication rather than token authentication, you still would like to watch this for password security.
2- https://scotch.io/tutorials/authenticate-a-node-js-api-with-json-web-tokens
This is where I learned the basics of token authentication. While the example is (as you mentioned) in mongodb rather than postgresql, you can still use postgresql&sequelize.js in the place where he uses mongodb.
To summarize: I don't think that converting the sample projects from mongodb to postgresql will be much of a challenge itself. I've done that recently myself, I put together a few sample projects and converted them from mongodb to couchbase, the conversion itself took no more than 10% of the time I put into this thing.

