Microservices with Micronaut

What if your Java microservices could start in 67 milliseconds? See how Micronaut's compile-time magic makes the JVM a top contender for serverless.

#1about 3 minutes

Why traditional Java frameworks are slow in the cloud

Slow startup times in frameworks like Spring Boot become a major cost and performance issue when scaling services to zero in the cloud.

#2about 3 minutes

How Micronaut achieves fast startups with compile-time DI

Micronaut moves expensive runtime operations like dependency injection, proxy creation, and AOP to the build phase using an annotation processor.

#3about 5 minutes

Understanding Micronaut's performance and build time tradeoffs

A simple benchmark with empty beans can be misleading; the real performance gains come from avoiding Spring's complex auto-configuration, at the cost of longer compile times.

#4about 5 minutes

A comprehensive overview of Micronaut's features

Micronaut is a full-stack framework providing features for dependency injection, REST APIs, caching, resilience, database access, security, and serverless functions.

#5about 5 minutes

Creating your first Micronaut project and HTTP endpoint

Bootstrap a new application using the Micronaut CLI and create a basic REST endpoint with the `@Controller` and `@Get` annotations.

#6about 4 minutes

Using dependency injection with services and singletons

Structure your application by creating services and using constructor injection with `@Inject`, ensuring implementations are discoverable with `@Singleton`.

#7about 3 minutes

Building a declarative HTTP client to call external APIs

Define a Java interface annotated with `@Client` to have Micronaut automatically generate a type-safe HTTP client implementation at compile time.

#8about 3 minutes

Implementing resilience patterns like caching and fallbacks

Easily add resilience to your services by using the `@Cacheable` annotation for caching and the `@Fallback` annotation for failure recovery.

#9about 4 minutes

Comparing Micronaut and Spring Boot performance benchmarks

A real-world application benchmark shows Micronaut has significantly faster startup times, smaller JAR sizes, and higher request throughput compared to an equivalent Spring Boot application.

#10about 4 minutes

Compiling Micronaut applications to native images with GraalVM

Leverage Micronaut's reflection-free architecture to compile your application into a native executable using GraalVM, achieving startup times under 100 milliseconds.

#11about 4 minutes

Evaluating the pros, cons, and caveats of Micronaut

While Micronaut offers impressive performance, consider its relative maturity and the complexities of debugging native images when deciding if it's right for your project.

#12about 7 minutes

Answering questions on Micronaut and its ecosystem

The speaker answers audience questions regarding OpenJDK compatibility, Spring AOP support, use cases to avoid, comparisons to Quarkus, and market adoption.