Custom Spring Boot Starter Library

Overview

A custom Spring Boot starter library that encapsulates common enterprise patterns and configurations, enabling rapid development of production-ready applications. This starter provides opinionated defaults while maintaining flexibility for customization.

Features

Auto-Configuration

• Database Configuration: Automatic DataSource and JPA setup
• Security Configuration: OAuth2, JWT, and RBAC out of the box
• Caching Configuration: Redis and Caffeine cache integration
• Monitoring Setup: Micrometer metrics and health checks

Enterprise Patterns

• Audit Logging: Automatic entity auditing with JPA
• Exception Handling: Global exception handling with proper HTTP responses
• Request/Response Logging: Configurable request/response interceptors
• Rate Limiting: Built-in rate limiting with Redis backend

Development Tools

• API Documentation: Automatic OpenAPI/Swagger generation
• Testing Utilities: Test containers and mock configurations
• Development Profiles: Environment-specific configurations
• Hot Reload: Development-friendly auto-restart capabilities

Technical Implementation

Auto-Configuration Classes

@Configuration
@ConditionalOnClass(DataSource.class)
@EnableConfigurationProperties(DatabaseProperties.class)
public class DatabaseAutoConfiguration {
    // Automatic database configuration
}

Custom Properties

• Validation: Comprehensive property validation
• Documentation: Well-documented configuration options
• Defaults: Sensible defaults for all configurations
• Environment Binding: Support for environment-specific overrides

Testing Strategy

• Unit Tests: Comprehensive test coverage (95%+)
• Integration Tests: Real-world scenario testing
• Test Containers: Database and external service testing
• Performance Tests: Load testing for critical paths

Usage Examples

Basic Setup

<dependency>
    <groupId>me.kreaker</groupId>
    <artifactId>spring-boot-enterprise-starter</artifactId>
    <version>1.0.0</version>
</dependency>

Configuration

kreaker:
  enterprise:
    security:
      jwt:
        secret: ${JWT_SECRET}
        expiration: 3600
    monitoring:
      enabled: true
      metrics:
        - http.requests
        - database.connections

Benefits

Development Speed

• Reduced Boilerplate: 70% less configuration code
• Faster Setup: New projects ready in minutes
• Best Practices: Enforced enterprise patterns
• Consistency: Standardized across all applications

Production Readiness

• Security: Production-grade security configurations
• Monitoring: Built-in observability features
• Performance: Optimized default configurations
• Reliability: Battle-tested patterns and configurations

Adoption & Impact

Usage Statistics

• Projects Using: 15+ internal projects
• Downloads: 500+ Maven downloads
• Contributors: 3 active contributors
• Issues Resolved: 25+ GitHub issues

Developer Feedback

• Setup Time: Reduced from 2 days to 2 hours
• Bug Reduction: 40% fewer configuration-related bugs
• Consistency: Improved code consistency across teams
• Learning Curve: Easier onboarding for new developers