Micronaut Core Guidelines

Apply Micronaut core guidelines for DI, configuration, HTTP adapters, and operations.

What is covered in this Skill?

• Thin main with Micronaut.run(Application.class, args)
• Bean scopes: @Singleton, @Prototype; request scope only when justified
• Constructor injection with jakarta.inject.Inject
• @Factory for third-party or explicit bean construction
• @ConfigurationProperties (grouped settings) vs scattered @Property
• @Requires and environments instead of env branching in domain code
• Thin @Controller types delegating to @Singleton services
• @Scheduled with explicit failure visibility
• @ExecuteOn(TaskExecutors.BLOCKING) (or virtual-thread executors) for blocking I/O off the event loop
• Netty graceful shutdown properties
• AOP interceptors for cross-cutting concerns

Scope: Apply recommendations based on the reference rules and good/bad code examples.