Spring Security with JWT, Refresh Token, Database, and Redis

This guide extends our Spring Security setup by adding a refresh token mechanism, allowing users to renew access tokens without re-authenticating. We’ll store refresh tokens in Redis for secure session management and implement database-backed user authentication.

For Basic Security

Introduction-to-spring-security-a-beginners-guide

Step 1: Understanding JWT and Refresh Tokens

Why Refresh Tokens?

Access tokens have short lifespans to minimize risks if stolen. Refresh tokens, with longer lifespans, allow clients to request new access tokens without requiring the user to log in again.

Step 2: Project Setup

Ensure the following dependencies in your pom.xml

<dependency>  
    <groupId>org.springframework.boot</groupId>  
    <artifactId>spring-boot-starter-security</artifactId>  
</dependency>  
<dependency>  
    <groupId>org.springframework.boot</groupId>  
    <artifactId>spring-boot-starter-data-jpa</artifactId>  
</dependency>  
<dependency>  
    <groupId>org.springframework.boot</groupId>  
    <artifactId>spring-boot-starter-data-redis</artifactId>  
</dependency>  
<dependency>…