Helidon – set of Java libraries for writing microservices

Helidon is a cloud-native, open‑source set of Java libraries for writing microservices that run on a fast web core powered by Netty.

Helidon supports two programming models:

  • Helidon MP: MicroProfile 3.3.
  • Helidon SE: a small, functional style API.

This is free and open source software.

Features include:

  • Designed to be simple to use, with tooling and examples to get you going quickly. Since Helidon is simply a collection of Java libraries running on a fast Netty core, there is no extra overhead or bloat.
  • Full MicroProfile support – supports MicroProfile and provides familiar APIs like JAX-RS, CDI and JSON-P/B.
  • Reactive WebServer – provides a modern functional programming model and runs on top of Netty. Lightweight, flexible and reactive, the Helidon WebServer provides a simple-to-use and fast foundation for your microservices.
  • Observable and Resilient – support for health checks, metrics, tracing and fault tolerance. Write cloud-ready applications that integrate with Prometheus, Jaeger/Zipkin and Kubernetes.
  • GraalVM Native Image Support – supports GraalVM Native Image so you can compile your Helidon application into a small-footprint native executable. Or you can package your application as a jlink image or a traditional application JAR.
  • Persistence Support – fully supports DB connectivity. Its non-blocking database client supports existing blocking JDBC drivers as well as relational and non-relational databases.
  • Reactive streams messaging.

Support: GitHub Code Repository
Developer: Oracle
License: Apache License Version 2.0

Helidon is written in Java. Learn Java with our recommended free books and free tutorials.

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