micronaut-projects/micronaut-core

Health v2 · maintenance only

Adoption not part of the score

6421 stars · 1206 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Micronaut is a modern, JVM-based full-stack framework for building modular, easily testable applications and microservices in Java, Kotlin, and Groovy. It pre-computes framework infrastructure at compile time (AOT), delivering fast startup, low memory footprint, and minimal reflection compared to reflection-based frameworks like Spring Boot.

Use cases

• build microservices in java with fast startup and low memory
• develop serverless functions on the jvm
• create rest apis with a netty-based non-blocking http server
• replace spring boot with a compile-time dependency injection framework
• build message-driven and command-line jvm applications
• set up service discovery and distributed configuration for cloud-native apps
• generate openapi/swagger documentation for jvm services

When to choose

• you need fast startup and low memory for microservices or serverless (e.g., GraalVM native images)
• you want a Spring Boot alternative with compile-time DI and no runtime bytecode generation
• your team works in Java, Kotlin, or Groovy on the JVM
• you need built-in cloud-native features like service discovery, distributed config, and tracing

When to avoid

• your team is deeply invested in the Spring ecosystem and its libraries
• you need the largest possible third-party integration ecosystem or community size
• you are building a simple script or small tool where a framework is overkill
• you rely on libraries that depend heavily on runtime reflection or proxies

Facets

framework · maturity stable

web-framework api-framework http-server routing middleware microservices serverless cli configuration-management service-discovery tracing web-development backend microservices developer-tools cloud-computing apis jvm cross-platform cloud serverless jvm aot-compilation dependency-injection netty graalvm spring-alternative groovy cloud-native openapi docker

Member repositories

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markdown · JSON · MCP: product_card(name="micronaut-projects/micronaut-core")