---
description: >-
  A sample code implementation illustrating how Spring Security can help address
  these challenges
---

# Sample Coding Demo

In a microservices architecture, Spring Security with JWT provides robust authentication and session management. This setup centralizes authentication in an authorization server, ensuring secure, scalable, and consistent access control across services. It enhances security by maintaining stateless sessions and standardizing access protocols across the ecosystem.

**Key Components and Flow:**

1. **Centralized Authentication Server:**
   * Handles user authentication and generates JWTs.
   * Decouples authentication logic from individual microservices.
2. **JWT Token Utilization:**
   * Stateless authentication using JWTs, reducing server load and enhancing scalability.
   * Tokens are signed and optionally encrypted for integrity and confidentiality.
3. **Secure Token Storage and Transmission:**
   * Use secure methods to store and transmit tokens, ensuring protection against leaks and misuse.
   * Implement token expiration and rotation policies to minimize risks.
4. **Consistent Access Control:**
   * Define and enforce role-based access control (RBAC) policies centrally.
   * Ensure all microservices adhere to the same authorization standards.
5. **Cross-Domain Session Management:**
   * Use HTTP-only cookies and implement Single Sign-On (SSO) solutions for seamless session management across multiple domains.



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