## +24 ## Multi Producer, Multi Consumer, Lock Free, Atomic Queue User API and Implementation ... ## EREZ STRAUSS ## Lockfree, MPMC Queue - Legal All Statements and representations are my own and do 520956ef36cdf83777244/p10_1.jpg) ## Queue - Message and time flow Producer 1 Consumer 1 Producer 2 Consumer 2 Queue Producer N Consumer M out time ## Lockfree, MPMC Queue - Connecting Application Capacity: Bounded / dynamic & memory allocation - Serialization: Strict global order or relaxed per producer order API: single item / multiple items, atomicity-ready or not • Message size: fixed / dynamic

## +23 ## Single Producer Single Consumer Lock-free FIFO From the Ground Up CHARLES FRASCH Charlie Frasch charles.frasch@gmail.com Senior Core Developer - IEX Group https://www.iex.io/ Code at: https://github that are not met in out-of-the-box implementations. ## Single Producer Single Consumer Lock-Free Wait-Free Fifo - Single producer: one producer (aka writer) thread - Single consumer: one consumer (aka reader)

2.2 客户端的公共配置 ..... 32 11.2.3 Producer 配置 ..... 33 11.2.4 PushConsumer 配置 ..... 33 11.2.5 PullConsumer 配置 ..... 34 11.3 Message 数据结构 ..... 35 11.3.1 针对 Producer ..... 35 11.3.2 针对 Consumer 35 12.1 Broker 配置参数 ..... 35 12.2 Broker 集群搭建 ..... 37 12.3 Broker 重启对客户端的影响 ..... 40 13 Producer 最佳实践.....40 13.1 发送消息注意事项.....40 13.2 消息发送失败如何处理.....41 13.3 选择 oneway 形式发送.....42 13.4 为支付宝应用提供消息服务 ■ com.alibaba.commonmq v1.0 = Notify + RocketMQ + B2B 个性化需求 为 B2B 应用提供消息服务 ## 3 专业术语 ■ Producer 消息生产者，负责产生消息，一般由业务系统负责产生消息。 ■ Consumer 消息消费者，负责消费消息，一般是后台系统负责异步消费。 ■ Push Consumer Consumer

Slave 服务器每隔 30s 会向 Nameserver 发送心跳包，心跳包中会包含存在在 Broker 上所有的 topic 的路由信息。 ### 3. Client 消息客户端，包括 Producer(消息发送者)和 Consumer(消费消费者). 客户端在同一时间只会连接一台 nameserver，只有在连接出现异常时才会向尝试连接另外一台。客户端每隔 30s 向 Nameserver InterruptedException { DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name"); producer.setNamesrvAddr("127.0.0.1:9876"); producer.start(); for (int i = 0; i < } SendResult sendResult = producer.send(msg); System.out.printf("%s%n", sendResult); } catch (Exception e) { e.printStackTrace(); Thread.sleep(1000); } producer.shutdown(); } 其路由信息如下，符合预期。

RocketMQ 原理解析.....1 斩秋.....1 前言.....4 第一章：producer.....5 一：Producer 启动流程.....5 二：Producer 如何发送消息.....6 2.1 producer 发送普通消息.....7 2.2 顺序消息发送.....7 2.3 分布式事物消息.... 42 6.2：索引服务 IndexService 线程.....43 6.3：构建索引服务.....43 6.4：Broker 与 client（consumer，producer）之间的心跳，.....44 6.5：Broker 与 namesrv 之间的心跳.....45 第四章：NameServer.....46 一：Namesrv 功能 com/alibaba/RocketMQ 获取最权威的文档、问题解答、原理介绍等。 ## 第一章： producer ## 一 ：Producer 启动流程  Producer 如何感知要发送消息的 broker 即 brokerAddrTable 中的值是怎么获得的，

Point-to-Point Messaging Point-to-point messaging is a common scenario in which a message sent by a producer has only one consumer. AMQP and JMS message producers and consumers can make use of point-to-point example of JMS Clients, the messages sent by a JMS queue producer will be routed using the anycast routing type. Messages sent by a JMS topic producer will use the multicast routing type. In addition when "red"); producer.send(redMessage); TextMessage greenMessage = senderSession.createTextMessage("Green"); greenMessage.setStringProperty("color", "green"); producer.send(greenMessage);

Point-to-Point Messaging Point-to-point messaging is a common scenario in which a message sent by a producer has only one consumer. AMQP and JMS message producers and consumers can make use of point-to-point example of JMS Clients, the messages sent by a JMS queue producer will be routed using the anycast routing type. Messages sent by a JMS topic producer will use the multicast routing type. In addition when "red"); producer.send(redMessage); TextMessage greenMessage = senderSession.createTextMessage("Green"); greenMessage.setStringProperty("color", "green"); producer.send(greenMessage);

Point-to-Point Messaging Point-to-point messaging is a common scenario in which a message sent by a producer has only one consumer. AMQP and JMS message producers and consumers can make use of point-to-point example of JMS Clients, the messages sent by a JMS queue producer will be routed using the anycast routing type. Messages sent by a JMS topic producer will use the multicast routing type. In addition when "red"); producer.send(redMessage); TextMessage greenMessage = senderSession.createTextMessage("Green"); greenMessage.setStringProperty("color", "green"); producer.send(greenMessage);

Point-to-Point Messaging Point-to-point messaging is a common scenario in which a message sent by a producer has only one consumer. AMQP and JMS message producers and consumers can make use of point-to-point example of JMS Clients, the messages sent by a JMS message producer will be routed using the anycast routing type. Messages sent by a JMS topic producer will use the multicast routing type. In addition when "red"); producer.send(redMessage); TextMessage greenMessage = senderSession.createTextMessage("Green"); greenMessage.setStringProperty("color", "green"); producer.send(greenMessage);

Point-to-Point Messaging Point-to-point messaging is a common scenario in which a message sent by a producer has only one consumer. AMQP and JMS message producers and consumers can make use of point-to-point example of JMS Clients, the messages sent by a JMS message producer will be routed using the anycast routing type. Messages sent by a JMS topic producer will use the multicast routing type. In addition when "red"); producer.send(redMessage); TextMessage greenMessage = senderSession.createTextMessage("Green"); greenMessage.setStringProperty("color", "green"); producer.send(greenMessage);