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class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">本页总览</button></div><div class="theme-doc-markdown markdown"><h1>为什么选择RocketMQ</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="为什么-rocketmq">为什么 RocketMQ<a href="#为什么-rocketmq" class="hash-link" aria-label="为什么 RocketMQ的直接链接" title="为什么 RocketMQ的直接链接"></a></h2><p>在阿里孕育 RocketMQ 的雏形时期，我们将其用于异步通信、搜索、社交网络活动流、数据管道，贸易流程中。随着我们的贸易业务吞吐量的上升，源自我们的消息传递集群的压力也变得紧迫。</p><p>根据我们的研究，随着队列和虚拟主题使用的增加，ActiveMQ IO模块达到了一个瓶颈。我们尽力通过节流、断路器或降级来解决这个问题，但效果并不理想。于是我们尝试了流行的消息传递解决方案Kafka。不幸的是，Kafka不能满足我们的要求，其尤其表现在低延迟和高可靠性方面，详见下文。在这种情况下，我们决定发明一个新的消息传递引擎来处理更广泛的消息用例，覆盖从传统的pub/sub场景到高容量的实时零误差的交易系统。</p><p>Apache RocketMQ 自诞生以来，因其架构简单、业务功能丰富、具备极强可扩展性等特点被众多企业开发者以及云厂商广泛采用。历经十余年的大规模场景打磨，RocketMQ 已经成为业内共识的金融级可靠业务消息首选方案，被广泛应用于互联网、大数据、移动互联网、物联网等领域的业务场景。</p><div class="theme-admonition theme-admonition-tip alert alert--success admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>提示</div><div class="admonitionContent_S0QG"><p>下表显示了RocketMQ、ActiveMQ和Kafka之间的比较 </p></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="rocketmq-vs-activemq-vs-kafka">RocketMQ vs. ActiveMQ vs. Kafka<a href="#rocketmq-vs-activemq-vs-kafka" class="hash-link" aria-label="RocketMQ vs. ActiveMQ vs. Kafka的直接链接" title="RocketMQ vs. ActiveMQ vs. Kafka的直接链接"></a></h2><table><thead><tr><th>Messaging Product</th><th>Client SDK</th><th>Protocol and Specification</th><th>Ordered Message</th><th>Scheduled Message</th><th>Batched Message</th><th>BroadCast Message</th><th>Message Filter</th><th>Server Triggered Redelivery</th><th>Message Storage</th><th>Message Retroactive</th><th>Message Priority</th><th>High Availability and Failover</th><th>Message Track</th><th>Configuration</th><th>Management and Operation Tools</th></tr></thead><tbody><tr><td>ActiveMQ</td><td>Java, .NET, C++ etc.</td><td>Push model, support OpenWire, STOMP, AMQP, MQTT, JMS</td><td>Exclusive Consumer or Exclusive Queues can ensure ordering</td><td>Supported</td><td>Not Supported</td><td>Supported</td><td>Supported</td><td>Not Supported</td><td>Supports very fast persistence using JDBC along with a high performance journal，such as levelDB, kahaDB</td><td>Supported</td><td>Supported</td><td>Supported, depending on storage,if using levelDB it requires a ZooKeeper server</td><td>Not Supported</td><td>The default configuration is low level, user need to optimize the configuration parameters</td><td>Supported</td></tr><tr><td>Kafka</td><td>Java, Scala etc.</td><td>Pull model, support TCP</td><td>Ensure ordering of messages within a partition</td><td>Not Supported</td><td>Supported, with async producer</td><td>Not Supported</td><td>Supported, you can use Kafka Streams to filter messages</td><td>Not Supported</td><td>High performance file storage</td><td>Supported offset indicate</td><td>Not Supported</td><td>Supported, requires a ZooKeeper server</td><td>Not Supported</td><td>Kafka uses key-value pairs format for configuration. These values can be supplied either from a file or programmatically.</td><td>Supported, use terminal command to expose core metrics</td></tr><tr><td>RocketMQ</td><td>Java, C++, Go</td><td>Pull model, support TCP, JMS, OpenMessaging</td><td>Ensure strict ordering of messages,and can scale out gracefully</td><td>Supported</td><td>Supported, with sync mode to avoid message loss</td><td>Supported</td><td>Supported, property filter expressions based on SQL92</td><td>Supported</td><td>High performance and low latency file storage</td><td>Supported timestamp and offset two indicates</td><td>Not Supported</td><td>Supported, Master-Slave model, without another kit</td><td>Supported</td><td>Work out of box,user only need to pay attention to a few configurations</td><td>Supported, rich web and terminal command to expose core metrics</td></tr></tbody></table></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a 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