How can I implement authentication in a Node.js API?

How can I implement authentication in a Node.js API?

You can implement authentication in a Node.js API using libraries like Passport.js or by creating your own JWT-based system.

What is JWT and how does it work for authentication?

JWT, or JSON Web Token, is a compact, URL-safe means of representing claims to be transferred between two parties. It allows you to verify the token's authenticity and the user's identity.

Can you show me a simple example of using JWT in a Node.js application?

Sure! First, install the jsonwebtoken package. Then, create a token using jwt.sign() and verify it with jwt.verify() in your routes.

What are some common security practices I should follow?

Always use HTTPS, validate user input, store passwords securely using hashing, and implement rate limiting.