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Core patterns and configuration for AWS SDK for Java 2.x service clients, authentication, and HTTP management. \n \n Covers client builder patterns, credential provider chains (en…
Unit testing patterns for MapStruct mappers and custom converters with comprehensive transformation validation. \n \n Covers field mapping accuracy, null handling, type conversion…
AWS RDS instance and snapshot management using AWS SDK for Java 2.x. \n \n Covers core RDS operations: creating and modifying DB instances, managing snapshots, parameter groups, a…
S3 object storage patterns and operations using AWS SDK for Java 2.x. \n \n Covers bucket creation, object uploads/downloads, multipart transfers, presigned URLs, and S3 Transfer…
Test Spring @ConfigurationProperties bindings, validation, and type conversions without full context startup. \n \n Use ApplicationContextRunner to test property binding in isolat…
JUnit 5 parameterized testing patterns for running single test methods with multiple input combinations. \n \n Supports multiple data sources: @ValueSource for simple values, @Csv…
Comprehensive testing strategies for LangChain4j applications with mocks, containers, and RAG validation. \n \n Provides unit testing patterns with mock models, integration testin…
Unit testing patterns for Spring Security authorization annotations and role-based access control. \n \n Covers @PreAuthorize , @Secured , and @RolesAllowed method-level security…
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…
Unit testing REST controllers in isolation with MockMvc and mocked service dependencies. \n \n Covers testing all HTTP methods (GET, POST, PUT, PATCH, DELETE) with status code and…
