Learn MICRONAUT with Real Code Examples

Compile-time DI instead of runtime reflection

Reactive and non-blocking HTTP layer

Modular microservice architecture

AOP and declarative programming via annotations

Support for GraalVM native images

Client sends HTTP request -> Micronaut Controller

Controller delegates to Service (bean)

Service may perform reactive/non-blocking operations

Response generated and sent back

Non-blocking I/O allows other requests to be processed simultaneously

Microservices architecture

Controller-Service-Bean pattern

Compile-time AOP for cross-cutting concerns

Reactive streams for async data

Cloud-native integrations and service discovery

Microservice-based e-commerce platform

Serverless backend for mobile apps

Reactive IoT data ingestion

Streaming analytics service

Cloud-native microservice orchestration

Compile-time dependency injection

Lightweight and modular microservices

Reactive and non-blocking architecture

Cloud-native and serverless ready

Fast startup and low memory usage

Leverage GraalVM native images for fast startup

Use reactive endpoints for high concurrency

Deploy multiple instances via Kubernetes or Docker

Monitor metrics and implement caching

Use cloud-native service discovery and load balancing

Adapt from Spring Boot by replacing runtime DI with compile-time DI

Refactor Controllers and Services

Replace reflection-based libraries

Adjust reactive endpoints and configuration

Test thoroughly with Micronaut embedded server