This skill helps you unit test REST controllers with MockMvc by isolating the web layer and validating requests, responses, and errors.

This skill enables efficient DynamoDB usage with AWS SDK for Java 2.x, delivering type-safe operations and Spring Boot integration.

This skill guides you in writing parameterized unit tests with JUnit 5 using various sources to cover multiple scenarios efficiently.

This skill implements production-ready JWT authentication and authorization for Spring Boot 3.5.x, enabling stateless security and RBAC with Spring Security.

This skill helps you configure Spring Boot Actuator for production-grade monitoring, health checks, and secure, observable JVM services.

This skill helps you optimize retrieval by selecting and tuning chunking strategies for RAG systems and large documents.

This skill helps you implement feature-aligned CRUD services in Spring Boot 3.5+, aligning aggregates, repositories, and controllers with clean DTOs.

This skill helps you validate exception handling in Spring controllers by testing @ExceptionHandler and @ControllerAdvice with MockMvc for precise error

This skill provides testing strategies for LangChain4J applications, enabling reliable unit, integration, and end-to-end tests with mocks and Testcontainers.

This skill helps you implement AWS messaging with SQS and SNS using Java SDK 2.x, covering queues, topics, DLQ, and Spring Boot patterns.

This skill helps you validate @ConfigurationProperties bindings with ApplicationContextRunner, ensuring proper binding, validation, defaults, profiles, and

This skill guides building robust Spring Boot test suites with unit, slice, and integration patterns using Testcontainers and MockMvc.

This skill helps you apply comprehensive unit-test boundary patterns, covering min/max values, nulls, empties, precision, and edge cases across Java/Python

This skill provides reusable AWS CloudFormation patterns for EC2, security groups, IAM roles, and ALB configurations to speed infrastructure as code.

This skill helps you design production-ready AWS CloudFormation patterns for RDS databases, including instances, clusters, subnets, parameter groups, and

This skill helps you securely manage secrets with AWS Secrets Manager using Java SDK v2, including storing, retrieving, rotating, and Spring Boot integration.

This skill helps Java developers integrate Amazon Bedrock patterns with AWS SDK 2.x, enabling model listing, invocation, streaming, and Spring Boot integration.

This skill helps you configure AWS SDK for Java 2.x with best practices for clients, authentication, timeouts, and error handling.

This skill helps you define production CloudFront distributions with CloudFormation, multiple origins, caching, security headers, and cross-stack references.

This skill helps you create secure AWS CloudFormation templates by applying best practices for encryption, secrets management, and defense-in-depth.

This skill helps you build declarative, type-safe AI services with LangChain4j in Java, enabling memory, tool integration, and structured outputs.