claude-ai-spring-boot

Review checklist for Java / Spring Boot code - correctness, security, performance, Spring signals, REST semantics, and code smells; project rules are referenced from conventions, not repeated. Use when user says "review code", "check this PR", "refactor", "check API", or before merging changes.

Spring Boot project conventions and mandatory rules. Auto-loads when working with Spring Boot, Java, or Maven projects. Enforces No-Lombok, constructor injection, RestClient, Flyway for relational databases, Problem Details errors, and other standards; adds OpenAPI contract rules when the API is built for a UI.

Design patterns with Java examples - classic (Factory, Builder, Strategy, Observer, Decorator, Adapter) and enterprise/microservices (Saga, Outbox, CQRS). Use when user asks about patterns, designing extensible components, or distributed transaction strategies.

Java 21+ features for Spring Boot - records, sealed classes, pattern matching, virtual threads, text blocks. Use when user asks about modern Java, Java 21 features, or when modernizing existing code.

JPA/Hibernate patterns and common pitfalls (N+1, lazy loading, transactions, queries). Use when user has JPA performance issues, LazyInitializationException, or asks about entity relationships and fetching strategies.

Java logging best practices with SLF4J, structured logging (JSON), and MDC for request tracing. Includes AI-friendly log formats for AI coding assistant debugging. Use when user asks about logging, debugging application flow, or analyzing logs.

Spring Boot 4.x development - REST APIs, JPA, Security, Testing, and Cloud-native patterns. Use for building enterprise Java applications with Spring Boot.

Testing patterns for Spring Boot - JUnit 5, Mockito, MockMvc, Testcontainers, positive and negative test cases. Use when user asks about testing, writing tests, test coverage, or test failures.