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Micronaut Stack

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description Micronaut Stack Overview

Micronaut is an open-source framework for building JVM applications, including microservices, serverless functions, and web services in Java, Kotlin, or Groovy. Created by developers at Object Computing and first released in 2018, it performs dependency injection and related framework processing at compile time instead of relying heavily on runtime reflection. This design supports fast startup, reduced memory use, and GraalVM native images.

help Micronaut Stack FAQ

What programming languages does the Micronaut framework support?

Micronaut supports Java, Kotlin, and Groovy as its primary languages for building JVM-based applications. The framework provides first-class support for all three, allowing developers to choose whichever JVM language best fits their team's skills and project requirements.

How does Micronaut compare to Spring Boot for startup time and memory usage?

Micronaut performs dependency injection at compile time using ahead-of-time compilation rather than runtime reflection, which dramatically reduces startup time and memory consumption compared to Spring Boot. This makes Micronaut particularly attractive for serverless functions and microservices where fast cold starts and low resource usage are critical.

Who created the Micronaut framework and when was it released?

Micronaut was created by developers at Object Computing, Inc. (OCI), a software company based in St. Louis, Missouri, and was first released in 2018. The framework shares some lineage with Grails, another OCI project, and its lead developer Graeme Rocher was previously a co-founder of the Grails framework.

Is Micronaut free and open source?

Yes, Micronaut is free and open-source software released under the Apache License 2.0. The full source code is publicly available on GitHub, allowing developers to use it in both personal and commercial projects without licensing fees and to contribute back to the project.

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