概述
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.
简言之,Apache Kafka 是一款开源的消息引擎系统。
消息引擎系统,通俗来讲,系统 A 发送消息给消息引擎系统,系统 B 从消息引擎系统中读取 A 发送的消息。

