Micronaut Advanced DI & AOP
summary
Build-time DI and AOP with Micronaut 2.3 compiles injection metadata and proxies at compile time so apps run without reflection or runtime proxies; demos build a CLI app with Gradle, wire a Vehicle/Engine domain, add singleton beans, factories, and @Named injection driven by application.yaml and environment. GraalVM native image support yields 20–30% throughput gains and fast startup. An @Around interceptor publishes EngineStart events (shown working) and async listeners handle them without blocking the start method.
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chapters (20)
- 0:00Introduction to Micronaut
- 1:05Micronaut build-time DI features
- 3:51Setting up a Micronaut project
- 6:19Basic dependency injection
- 8:28Creating domain models
- 10:36Fixing bean injection errors
- 12:21Startup events and application context
- 14:08Configurable dependency injection
- 17:22Testing configuration changes
- 19:55Immutable configuration properties
- 20:58Named beans and dynamic injection
- 22:25Environment-specific beans
- 24:30Cloud-aware bean selection
- 25:53Cloud-specific configurations
- 27:00Introduction to AOP in Micronaut
- 29:07Applying around advice
- 30:31Decoupling with events
- 32:16Asynchronous event handling
- 32:56Summary and resources
- 33:16Q&A session
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