rmjai

rmjai is an open-source Java library that enables high-throughput, low-latency messaging between distributed components. It was first released in 2018 by a team of developers at the University of Mysterium, who identified a gap in existing messaging frameworks for real‑time analytics applications. The library implements a lightweight, thread‑safe queue system that can be deployed in both embedded and cloud environments.

The core of rmjai is its non‑blocking event loop, which decouples producers and consumers and reduces context‑switch overhead. Messages are serialized using a compact binary format that optimizes bandwidth usage, and the library supports optional compression and encryption for secure data transport. Users can configure routing rules through a simple declarative DSL, allowing fine‑grained control over message flow without modifying application code.

rmjai has been adopted by several industry projects, including a financial trading platform that processes millions of market events per second and an IoT gateway that aggregates sensor data for real‑time monitoring. Its performance metrics are comparable to commercial brokers such as Kafka, but with a significantly smaller memory footprint.

The project is hosted on GitHub and released under the Apache 2.0 license, encouraging community contributions. The development roadmap focuses on adding native support for HTTP/3, improving metrics exposure, and expanding compatibility with polyglot environments. rmjai remains a popular choice for developers needing a lightweight, high‑performance messaging solution in Java.