How can I use JWT in my application?

How can I use JWT in my application?

JWT, or JSON Web Tokens, are used for securely transmitting information between parties. You can use them for authentication and information exchange.

Can you give me an example of how to implement JWT in a Node.js application?

Sure! First, you need to install the 'jsonwebtoken' package. Then, you can create a token like this: const token = jwt.sign({ userId: user.id }, 'your_secret_key');.

What are the benefits of using JWT over traditional session-based authentication?

JWTs are stateless, meaning they don't require server-side storage, which can improve scalability. They also allow for cross-domain authentication.

Are there any security concerns I should be aware of when using JWT?

Yes, you should always use HTTPS to prevent token interception, and ensure your secret key is strong and kept secure.