github.com/ThreeDotsLabs/watermill (go): Watermill is a Golang library for working efficiently with message streams.  It is intended for building event driven applications, enabling event sourcing, RPC over messages, sagas and basically whatever else comes to your mind.  You can use conventional pub/sub implementations like Kafka or RabbitMQ, but also HTTP or MySQL binlog if that fits your use case.  Website with detailed documentation: https://watermill.io/  Getting started guide: https://watermill.io/docs/getting-started/
Keywords: cqrs|event-driven|event-sourcing|events|go|golang|kafka|nats|rabbitmq|reactive|sagas|stream-processing|watermill