JWT Authentication Flow in Spring Boot

In this video, we will understand the JWT Authentication Flow in Spring Boot using this diagram. JWT stands for JSON Web Token. It is a secure and stateless way to authenticate users in modern web applications, mobile applications, and REST APIs. In traditional session-based authentication, the server stores the user session after login. But in JWT-based authentication, the server does not store the session. Instead, the server generates a signed token and sends it back to the client. The client stores this token and sends it with every protected API request. Now, let’s understand the complete flow step by step using this diagram.