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Production-grade monitoring, health checks, and metrics configuration for Spring Boot services using Actuator and Micrometer. \n \n Configure endpoint exposure, security policies, and dedicated management ports to isolate operational traffic from application routes \n Set up readiness and liveness health probes with custom indicators for orchestrator integration (Kubernetes, Cloud Foundry) \n Wire Micrometer exporters (Prometheus, OTLP, Wavefront) with application tags for cross-service correlat

Comprehensive REST API design standards and best practices for Spring Boot applications. \n \n Covers resource-based URL design, HTTP method conventions, status codes, DTOs, validation, and error handling with global exception strategies \n Includes pagination, filtering, sorting, security headers, CORS policies, and HATEOAS implementation patterns \n Provides constructor injection, immutable DTO patterns, transaction management, and logging best practices with code examples \n Enforces API vers

Fault tolerance and resilience patterns for Spring Boot microservices using Resilience4j. \n \n Provides six core patterns: circuit breaker, retry with exponential backoff, rate limiter, bulkhead (semaphore and thread pool), time limiter, and fallback mechanisms \n Annotation-based integration with Spring Boot 3.x AOP; patterns can be stacked on single methods for comprehensive fault tolerance \n Includes configuration examples for all patterns in YAML, with health indicator and Actuator endpoin

Comprehensive testing patterns for Spring Boot applications covering unit, slice, integration, and container-based tests. \n \n Covers four test types with performance targets: unit tests (< 50ms), slice tests (< 100ms), integration tests (< 500ms), and full context tests with Testcontainers \n Includes patterns for Mockito-based unit testing, JPA/MVC slice testing with focused Spring contexts, and REST API testing with MockMvc and WebTestClient \n Demonstrates Spring Boot 3.5+ @S

JWT authentication and authorization for Spring Boot 3.5.x with token generation, refresh strategies, and role/permission-based access control. \n \n Covers token generation with JJWT, Bearer/cookie authentication, and stateless session management using Spring Security 6.x \n Supports database-backed and OAuth2 provider integration (Google, GitHub) with modern SecurityFilterChain configuration \n Includes refresh token rotation, token blacklisting, and key rotation strategies for production secu

Annotation-driven caching abstraction for Spring Boot service methods with multi-provider support. \n \n Supports multiple cache providers (ConcurrentMap, Caffeine, Redis, Ehcache, JCache) via pluggable CacheManager beans without changing business code \n Provides @Cacheable , @CachePut , @CacheEvict , and @Caching annotations with SpEL-based key generation, conditional caching, and synchronization control \n Includes configuration patterns for TTL, capacity limits, and scheduled eviction; integ

Automated OpenAPI 3.0 documentation generation for Spring Boot 3.x REST APIs with Swagger UI. \n \n Integrates SpringDoc to auto-generate OpenAPI specs from annotated controllers, models, and validation rules without manual configuration \n Supports JWT Bearer, OAuth2, and Basic Auth security documentation with global scheme configuration and per-endpoint security requirements \n Includes comprehensive annotation patterns for documenting endpoints, request/response bodies, parameters, error resp

Develop production-ready Spring Boot applications with proper annotation-based configuration, dependency injection, REST controllers, JPA data persistence, service layers, and security implementation following Spring conventions.

This skill provides expert guide for testing Spring Boot 4 applications with modern patterns and best practices.

Production-ready AWS RDS configuration patterns for Spring Boot applications with Aurora, MySQL, and PostgreSQL. \n \n Supports Aurora MySQL, Aurora PostgreSQL, and standard MySQL/PostgreSQL with datasource configuration, HikariCP connection pooling, and SSL encryption \n Includes environment-specific profiles (dev/prod), Flyway database migrations, and read/write endpoint splitting for read-heavy workloads \n Provides security patterns using environment variables and AWS Secrets Manager integra