I Built Shree AI OS — A Deterministic AI Runtime for Java 21 After several months of development, I'm releasing the Developer Preview of Shree AI OS, a Java-first AI runtime designed for building intelligent backend applications. Most AI frameworks focus on chatbots. My goal was different: create a reusable runtime that developers can embed directly into Java applications with memory, planning, reasoning, and hybrid retrieval. Why I built it While building Spring Boot applications, I found that adding AI often meant stitching together multiple services. I wanted a deterministic runtime that provides: Hybrid RAG with PostgreSQL pgvectorEpisodic and semantic memoryPlanning and reasoning modulesMulti-agent orchestrationPrivacy-first architectureJava 21 native SDK Architecture The platform follows a layered architecture: Application LayerSDK LayerRuntime OrchestrationKernel ServicesLLM Provider Layer Every request flows through an explainable cognitive pipeline instead of directly calling an LLM. Developer Portal I also built an official documentation website using Next.js 16, React 19, Tailwind CSS 4, and Framer Motion. It includes: Architecture documentationSDK referenceQuickstart guideSecurity modelInteractive playground UI Tech Stack Java 21Spring BootPostgreSQL + pgvectorNext.js 16React 19Tailwind CSS 4 Feedback Welcome This is still a Developer Preview, and I'd love feedback from Java and backend developers. GitHub: github.com/darshanrathod04/shree-ai-os Website: shree-ai-os.netlify.app Thanks for reading!#java #springboot #opensource #ai #software #coding #development #engineering #inclusive #community I Built Shree AI OS — A Deterministic AI Runtime for Java 21