Apache Kafka is an open-source distributed event streaming platform used by thousands of companies for high-performance data pipelines, streaming analytics, data integration, and mission-critical applications.
—— Apache Kafka

除了已经集成的 RPC 框架（Spring Cloud OpenFeign、Apache Dubbo）之外，也提供了消息队列的解决方案，比如 Kafka、RabbitMQ 等。