---- 安装 ActiveMQ Classic或者ActiveMQ Artemis的关系: ActiveMQ Classic原来就叫ActiveMQ，是Apache开发的基于JMS 1.1的消息服务器...如果消费者没有发送确认消息，则ActiveMQ会认为消息未被正确处理，尝试重新传递消息，直到收到确认消息为止。 如果消费者发送的ack丢失，会导致Broker重新发送消息。...该模式下需要注意消息的幂等性 以下是使用 ActiveMQ 实现 “at least once” 语义的消息消费者代码示例: package org.example; import org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory...once” 的行为： package org.example; import org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory...择机确认"似乎充满了不确定性,这也意味着,开发者必须明确知道"择机确认"的具体时机,否则将有可能导致消息的丢失,或者消息的重复接受.那么在ActiveMQ中,AUTO_ACKNOWLEDGE是如何运作的呢
activemq-artemis-2.11.0/artemis-jms-server/src/main/java/org/apache/activemq/artemis/jms/bridge/QualityOfServiceMode.java...QualityOfServiceMode定义了三个枚举值，分别是AT_MOST_ONCE、DUPLICATES_OK、ONCE_AND_ONLY_ONCE sendBatchNonTransacted activemq-artemis...-2.11.0/artemis-jms-server/src/main/java/org/apache/activemq/artemis/jms/bridge/impl/JMSBridgeImpl.java...ONCE_AND_ONLY_ONCE或者AT_MOST_ONCE(且maxBatchSize大于1)的时候在sendMessages之前先执行ack(如果异常在ack与sendMessages之间，则消息可能丢失...qualityOfServiceMode为DUPLICATES_OK的在sendMessages之后执行ack(如果异常在sendMessages与ack之间，则异常之后，client端由于没有收到ack会再次发送消息
序 本文主要研究一下artemis JMSBridge的QualityOfServiceMode QualityOfServiceMode activemq-artemis-2.11.0/artemis-jms-server.../src/main/java/org/apache/activemq/artemis/jms/bridge/QualityOfServiceMode.java public enum QualityOfServiceMode...QualityOfServiceMode定义了三个枚举值，分别是AT_MOST_ONCE、DUPLICATES_OK、ONCE_AND_ONLY_ONCE sendBatchNonTransacted activemq-artemis...-2.11.0/artemis-jms-server/src/main/java/org/apache/activemq/artemis/jms/bridge/impl/JMSBridgeImpl.java...ONCE_AND_ONLY_ONCE或者AT_MOST_ONCE(且maxBatchSize大于1)的时候在sendMessages之前先执行ack(如果异常在ack与sendMessages之间，则消息可能丢失
编译代码 代码版本选用2.26.0的分支代码编译花了17分钟 梳理流程 测试用例 org/apache/activemq/artemis/jms/tests/TopicTest.java @Testpublic...org.apache.activemq.artemis.jms.client.ActiveMQTextMessage#doBeforeReceive @Overridepublic void doBeforeReceive...org.apache.activemq.artemis.core.client.impl.ClientConsumerImpl#receive(long, boolean) 获取消息重点还是得看这段代码...closed && toWait > 0) { 然后从buffer里面读取byte数组 org.apache.activemq.artemis.api.core.SimpleString#readSimpleString...引用 https://activemq.apache.org/components/artemis/documentation/hacking-guide/
Spring Boot还自动配置发送和接收消息所需的基础结构。...将 org.apache.activemq:artemis-jms-server 添加到您的应用程序可让您使用嵌入模式。 Artemis配置由 spring.artemis.* 中的外部配置属性控制。...spring.artemis.port=9876 spring.artemis.user=admin spring.artemis.password=secret 嵌入代理时，您可以选择是否要启用持久性并列出应该可用的目标...这些可以指定为逗号分隔列表以使用默认选项创建它们，或者您可以分别为 高级队列和主题配置定义 org.apache.activemq.artemis.jms.server.config.JMSQueueConfiguration...或 org.apache.activemq.artemis.jms.server.config.TopicConfiguration 类型的bean。
2.11.0/artemis-jms-client/src/main/java/org/apache/activemq/artemis/jms/client/ActiveMQMessage.java public...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientMessageImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientConsumerImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientSessionImpl.java...ServerConsumerImpl activemq-artemis-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/
/java/org/apache/activemq/artemis/jms/client/ActiveMQMessage.java public class ActiveMQMessage implements...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientMessageImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientConsumerImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientSessionImpl.java...ServerConsumerImpl activemq-artemis-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/
) Tomcat 8.5.14 (1个) 相关配置见如何准备环境 测试Jmeter脚本见如何Benchmark： 300线程，循环1000次，共30w请求 一共Benchmark了两次，因为JIT的关系...Err: 2 (0.00%) TPS：246873订单 / 46 秒 = 5366条 / s 数据库记录数偏少是因为Artemis队列满了，把消息丢掉了。...独立运行，内部使用Disruptor Oracle数据库 ActiveMQ Artemis ActiveMQ Artemis是JBoss把HornetQ捐赠到Apache基金会后改名的项目，目前是ActiveMQ...HornetQ是当年大名鼎鼎的高性能消息中间件，因此ActiveMQ Artemis也具备相当的性能表现。 本项目利用它做webapp和backend之间的消息通信。...backend利用它把从ActiveMQ Artemis获得请求串行化，判断商品库存是否充足，更新剩余库存，最后异步写入数据库。
序 本文主要研究一下artemis消息的推拉模式 th (52).jpeg 拉模式 receive activemq-artemis-2.11.0/artemis-jms-client/src/main...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientMessageImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientConsumerImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientConsumerImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientMessageImpl.java
序 本文主要研究一下artemis消息的推拉模式 拉模式 receive activemq-artemis-2.11.0/artemis-jms-client/src/main/java/org/apache...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientMessageImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientConsumerImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientConsumerImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientMessageImpl.java
实际上ActiveMQ Classic原来就叫ActiveMQ，是Apache开发的基于JMS 1.1的消息服务器，目前稳定版本号是5.x，而 ActiveMQ Artemis 是 由RedHat捐赠的...针对数据的持久层 ActiveMQ Artemis 还能够支持 JDBC。总结整体来说，ActiveMQ 通常指的是 ActiveMQ Classic，为了简化去掉了 Classic。...ActiveMQ Artemis 应该是作为下一个版本来候选的，支持的协议更新。2 套 ActiveMQ 的代码是不一样的。...因为这 2 个消息服务器的代码完全不一样，导致如果你使用 Spring 的话，使用的包的代码也不一样，ActiveMQ artemis 的调用代码更加简单，界面更好看。...如项目只是需要一个消息服务器，并且没有什么技术负担，使用 Spring 的框架的话，用 ActiveMQ artemis 可能更好些。有谁不愿意看好看的界面呢？
-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/postoffice/impl/PostOfficeImpl.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/QueueImpl.java public...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/QueueImpl.java class...0，若为0则返回false，否则判断当前时间与expiration的差值是否大于等于0，若为true则返回true expire activemq-artemis-2.11.0/artemis-server...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/QueueImpl.java public
序 本文主要研究一下artemis的DiscoveryGroup DiscoveryGroup activemq-artemis-2.11.0/artemis-core-client/src/main/...java/org/apache/activemq/artemis/core/cluster/DiscoveryGroup.java public final class DiscoveryGroup implements...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/cluster/DiscoveryGroup.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/api/core/JGroupsBroadcastEndpoint.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/impl/BroadcastGroupImpl.java
序 本文主要研究一下artemis的DiscoveryGroup cache-in-api-gateway-37-638.jpg DiscoveryGroup activemq-artemis-2.11.0.../artemis-core-client/src/main/java/org/apache/activemq/artemis/core/cluster/DiscoveryGroup.java public...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/cluster/DiscoveryGroup.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/api/core/JGroupsBroadcastEndpoint.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/impl/BroadcastGroupImpl.java
/main/java/org/apache/activemq/artemis/api/core/client/ClusterTopologyListener.java public interface...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/qourum/QuorumManager.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/qourum/QuorumManager.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/qourum/QuorumManager.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/ClusterController.java
-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/qourum/QuorumManager.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/qourum/QuorumManager.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/qourum/QuorumManager.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/cluster/ClusterController.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/ServerConnectVoteHandler.java
org/apache/activemq/artemis/core/server/federation/queue/FederatedQueue.java public class FederatedQueue...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/federation/FederatedAbstract.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/federation/FederatedQueueConsumerImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientSessionImpl.java...-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/client/impl/ClientConsumerImpl.java
这里面几乎完全列举了当下比较知名的消息引擎，包括： ZeroMQ 推特的Distributedlog ActiveMQ：Apache旗下的老牌消息引擎 RabbitMQ、Kafka：AMQP的默认实现...RocketMQ Artemis：Apache的ActiveMQ下的子项目 Apollo：同样为Apache的ActiveMQ的子项目的号称下一代消息引擎 商业化的消息引擎IronMQ 以及实现了...有了消息队列，我们只需要关心消息是否送达了队列，至于谁希望订阅，是下游的事情，无疑极大地减少了开发和联调的工作量。 3.错峰与流控 典型的使用场景就是秒杀业务用于流量削峰场景。...：有较低的概率丢失数据 功能支持：MQ领域的功能极其完备 缺点: 官方社区现在对ActiveMQ 5.x维护越来越少，较少在大规模吞吐的场景中使用。...时效性：ms级 可用性：非常高，kafka是分布式的，一个数据多个副本，少数机器宕机，不会丢失数据，不会导致不可用 消费者采用Pull方式获取消息, 消息有序, 通过控制能够保证所有消息被消费且仅被消费一次
/org/apache/activemq/artemis/api/core/Message.java public interface Message { //.........-2.11.0/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/message/impl/CoreMessage.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/postoffice/impl/PostOfficeImpl.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/PostOfficeJournalLoader.java...-2.11.0/artemis-server/src/main/java/org/apache/activemq/artemis/core/postoffice/DuplicateIDCache.java
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