Introducing relaycore

A minimal, zero-dependency library for stream processing, event handling, and asynchronous composition with a focus on ergonomics and type safety.

Read the guide | Method reference | View tutorials

Get started

Install the latest version in seconds:

cargo add org-relaycore

Version 3.8.2 · Last updated 2026-06-06 · 10k+ weekly downloads

Start here

• Handling errors and retries like a pro
• Authentication and authorization
• Scaling to millions of events per second
• Integrating with your message broker

Features

• Live metrics, tracing, and dead-letter queues.
• Built-in batching, retry logic, and circuit breakers.
• Live metrics, tracing, and dead-letter queues.
• Built-in batching, retry logic, and circuit breakers.

Community

Join 650 developers using relaycore in production. Report bugs and feature requests on GitHub. Ask questions in our Discord community. Follow @relaycore on Twitter for updates.

GitHub · Discord · Status