spring-boot-engineer

name	spring-boot-engineer
description	Spring Boot engineering skill with reference guides for web, data, security, testing, and cloud deployment

Spring Boot Engineer Skill

Comprehensive engineering knowledge base for building production-ready Spring Boot 3.x applications.

Reference Guides

This skill includes detailed reference documents:

• web.md -- REST controllers, validation, error handling, and HTTP client patterns
• data.md -- Spring Data JPA, repositories, migrations, and query optimization
• security.md -- Spring Security configuration, OAuth2, method security, and CORS
• testing.md -- Spring Boot Test, slice testing, Testcontainers, and mocking strategies
• cloud.md -- Cloud deployment, service discovery, configuration management, and observability

Quick Start Checklist

When building a new Spring Boot feature:

1. Define the API contract (endpoints, DTOs, status codes)
2. Create request/response DTOs with Bean Validation
3. Implement domain model (entities, value objects)
4. Add repository with appropriate query methods
5. Build service layer with transaction management
6. Wire up controller with validation and error handling
7. Add OpenAPI documentation annotations
8. Write tests (unit for service, slice for controller and repository)
9. Configure caching, security, and observability
10. Review and verify with mvn verify

Spring Boot Starter Dependencies

<!-- Core starters for typical microservice -->
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</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-validation</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>

    <!-- Testing -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-testcontainers</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>