JSON Web Tokens: What are they and how to use them?

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Currently, JSON Web Tokens (JWT) are widely used in various applications, ensuring the security of information .


In this article, I'll introduce some of the fundamental concepts that help you understand the foundation of JWT. Check them out below!

What is JWT?
JWT is an independent framework for japan cell phone number list information security in the form of access tokens. These tokens present information in JSON format , where they are encrypted and used to validate communication between the parties involved.

Below are some reasons why JWT has become so popular today.

Performance
JWTs offer a significant advantage in that they are stateless. This means that there is no need to constantly query the database to validate each user for each request made.


When a user authenticates, a JWT is generated and sent to the user, who will include it in all subsequent requests. The server then validates the token sent, eliminating the need to query the database, which significantly improves application performance.

Security
JWTs contribute to security in several ways. For example, once a token is signed, we can verify its authenticity and integrity . In this way, we can confirm that the content is valid and that the author of the content is who they claim to be.