Security

Why Security Matters

Spring Boot auto-configures Spring Security with sensible defaults (CSRF protection, secure headers, form login). In production applications requiring authentication, Security Starter provides OAuth2/JWT integration—protecting REST APIs with role-based access control (RBAC) while maintaining stateless architecture for horizontal scaling.

Problem: Manual Spring Security configuration requires SecurityFilterChain, authentication providers, authorization rules.

Solution: Spring Security auto-configuration with OAuth2/JWT starter dependencies.

Implementation Example

// Implementation details for security
// See full guide for comprehensive examples

Production Configuration

# Configuration for security
# See full guide for detailed configuration

Production Patterns

Best Practices:

• Use JWT for stateless authentication
• Implement role-based access control (RBAC)
• Enable HTTPS only (server.ssl.enabled=true)
• Configure CORS restrictively
• Use Spring Security method security (@PreAuthorize)

Trade-offs

Production recommendation: Use Spring Security auto-configuration with OAuth2/JWT. Custom SecurityFilterChain for complex authorization.

Next Steps

• Spring Boot Web - Web application basics
• Health Checks - Security health indicators