Welcome to 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 | Live recipes

Installation

Install the latest version in seconds:

cargo add org-relaycore

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

Popular guides

• Performance tuning for high throughput
• Building an event-driven microservice
• Local development and debugging
• Setting up event deduplication

Why relaycore

• Built-in batching, retry logic, and circuit breakers.
• Live metrics, tracing, and dead-letter queues.
• Streams, queues, and pub/sub unified under one API.
• Multi-region failover and automatic backpressure handling.

Community

Join 8,140 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