Latency Fat Tail - Pie ChartProducer 2 11 Queue Producer N Consumer 1 Consumer 2 Consumer M time tin tout Queue - Message and time flow Producer 1Lockfree, MPMC Queue - Connecting Application Components 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 unsigned P{2}; std::atomic prod_sum{0}; std::atomic cons_sum{0}; auto producer = [&]() { for (unsigned x = 0; x < N; ++x) { while (!q.push(x))

net/home/lock-free-algorithms/queues/unbounded-spsc-queue https://www.dpdk.org/ 3● Single producer: one producer (aka writer) thread ● Single consumer: one consumer (aka reader) thread ● Lock-free: it fixed-size buffer as if it were connected end-to-end. The oldest entry is processed first. 4 Single Producer Single Consumer Lock-Free Wait-Free Fifo5 Read message from network Handle message Write

.................................................................................. 32 11.2.3 Producer 配置 ............................................................................................ ............................................................................... 35 11.3.1 针对 Producer ............................................................................................... ................................... 40 项目开源主页：https://github.com/alibaba/RocketMQ IV 13 Producer 最佳实践 ..........................................................................................

.................. 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 .......................... ............................................................. 43 6.4：Broker 与 client（comsumer ，producer）之间的心跳， ................................ 44 6.5：Broker 与 namesrv 之间的心跳 ........................

topic 的路 由信息。 本文来自『中间件兴趣圈』公众号，仅作技术交流，未授权任何商业行为。 11 > 1.1 RocketMQ 核心概念扫盲篇 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 温馨提示：消息发送者在到默认路由信息时，其队列数量，会选择 DefaultMQProdu cer#defaultTopicQueueNums 与 Nameserver 返回的的队列数取最小值，DefaultMQ Producer#defaultTopicQueueNums 默认值为 4，故自动创建的主题，其队列数量默认 为 4。 Step3：发送消息 DefaultMQProducerImpl#sendKernelImpl InterruptedException { DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_ group_name"); producer.setNamesrvAddr("127.0.0.1:9876"); producer.start(); for (int i = 0; i < 9; i++)

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)

subscribe addresses. 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 or", "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)