reaktiiv

Reaktiiv is a software framework designed for building reactive, event-driven applications. It provides a set of libraries and runtime components that enable asynchronous data streams, backpressure-aware processing, and seamless integration with multiple data sources and message brokers. The project emphasizes modularity, language-agnostic APIs, and observable state, allowing developers to compose complex workflows from simple operators.

Origin of Reaktiiv began as a collaborative research effort in the mid-2010s among several startups and an academic lab. It was released as an open-source project in 2018 and later governed by the Reaktiiv Foundation, which coordinates contributors, licensing, and roadmap.

Architecture and features include core concepts such as publishers and subscribers, streams and operators, and a runtime that schedules asynchronous tasks with backpressure. It provides multi-language bindings (for example, Java, JavaScript, Python), a pluggable transport layer for HTTP, WebSocket, and message brokers such as Kafka and RabbitMQ, and a component library for building microservices, data pipelines, and IoT edge applications. Observability is addressed through built-in metrics, distributed tracing hooks, and diagnostics tooling.

Usage and reception: Reaktiiv is used in enterprise microservices, data processing pipelines, and IoT projects. Proponents highlight its composability and performance characteristics on streaming workloads; critics note a steeper learning curve and boilerplate for small tasks. The licensing is described as permissive, with an MIT-style license used in core modules and additional components offered under compatible terms.

See also: Reactive programming, Event-driven architecture, Stream processing, ReactiveX.