Helium

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Project Helium is a Java (JDK 24) microservice foundation designed to help teams move faster without compromising on quality. Whether you're launching a new product or modernizing legacy systems. It comes with modular integrations built for real-world backend systems—from environment configs and multi-tenant auth to observability and deployment pipelines. Features like TLS/mTLS, SSO, multi-OIDC provider support, and OpenTelemetry are included out of the box, making it easier to get production-ready infrastructure up and running quickly. It also supports LLM-based use cases through integration with LangChain4j, enabling teams to build AI-assisted features natively within Helidon services. Built on established patterns like Domain-Driven Design (DDD) and Hexagonal Architecture, it offers ready-to-use examples and a consistent layout that accelerate onboarding and promote long-term maintainability. Powered by Oracle Helidon SE 4—formerly Helidon Nima—Project Helium delivers unmatched performance, efficiency, and security through its lightweight runtime and virtual threads support.