Spring Boot 3: A Comprehensive Guide

Spring Boot 3 represents a major evolution in the Spring ecosystem. Let’s explore its key features and best practices:

Native Compilation

• GraalVM native image support
• Performance benefits
• Deployment considerations

Observability

• Micrometer integration
• Prometheus metrics
• Distributed tracing

Security Features

• OAuth 2.0 improvements
• JWT handling
• Security best practices

Data Access

• Spring Data improvements
• R2DBC support
• Transaction management

Testing

• TestContainers integration
• WebTestClient improvements
• Security testing

Production Ready Features

• Health checks
• Monitoring
• Docker integration