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New Java Framework Gains Popularity: Feature Overview and Prospects
The world of Java development does not stand still. Despite Spring Boot remaining the flagship of the ecosystem for the last two decades, a new player is confidently entering the scene in 2024-2025 — a framework focused on microservices, native compilation, and minimal memory consumption. This is Micronaut, which, according to JetBrains and GitHub surveys, has shown the highest growth in popularity among Java frameworks over the past 12 months.
Why Micronaut and not Spring Boot?
Spring Boot remains the standard for enterprise development. However, it has "blind spots":
- High startup time — a Spring Boot application needs 5–10 seconds just to initialize the context.
- Memory consumption — even a simple application "consumes" 100–200 MB of RAM.
- Problems with GraalVM — integration with native compilation requires complex configuration.
Micronaut solves these problems at the architectural level: it uses compile-time Dependency Injection, rather than runtime reflection. This provides:
- Startup speed — less than 1 second.
- Memory consumption — from 20 MB for a microservice.
- Time-to-first-response — less than 10 ms.
Code Example: Minimal REST Service
Here is what a simple controller looks like in Micronaut:
import io.micronaut.http.annotation.*;@Controller("/hello")public class HelloController { @Get public String sayHello() { return "Hello from Micronaut!"; }}To run it, just use the command ./gradlew run. No XML, no nested annotations — just Java and minimalism.
Key Features of Micronaut That Attract Developers
- Native GraalVM support — you compile the application into a native binary that starts in milliseconds. Ideal for serverless and Kubernetes.
- Built-in support for Kafka, RabbitMQ, gRPC, GraphQL — without additional libraries.
- Automatic test generation — the framework creates mocks and test configurations at compile time.
- Multi-platform — you can write server-side code that compiles for Android and WebAssembly.
Numbers and Statistics
According to the JetBrains Developer Ecosystem report for 2024:
- 18% of Java developers have already tried Micronaut (compared to 8% a year earlier).
- GitHub stars for the Micronaut project have surpassed the 8.5 thousand mark.
- 4 out of 10 major Java conferences (JConf, Devoxx, JavaOne) had dedicated tracks on Micronaut.
What about Quarkus?
We cannot fail to mention Quarkus — another popular framework from Red Hat. It is also focused on native compilation. However, Micronaut wins in two aspects: it is not tied to a runtime environment (works on JDK 17+, without a special runtime) and
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