【RocketMq】什么是，对比ActiveMq和Kafka
什么是RockMq:
Apache RocketMQ™ is an open source distributed messaging and streaming data platform.
为什么会有RocketMq：
Based on our research, with increased queues and virtual topics in use, ActiveMQ IO module reaches a bottleneck. We tried our best to solve this problem through throttling, circuit breaker or degradation, but it did not work well. So we begin to focus on the popular messaging solution Kafka at that time. Unfortunately, Kafka can not meet our requirements especially in terms of low latency and high reliability, see here for details.
In this context, we decided to invent a new messaging engine to handle a broader set of use cases, ranging from traditional pub/sub scenarios to high volume real-time zero-loss tolerance transaction system.
对比图
链接：http://rocketmq.apache.org/docs/motivation/