营销形网站,网络公司的推广,陈林设计事务所,网站备案名称必须是公司名延时队列 添加依赖配置文件队列TTL代码架构图交换机、队列、绑定配置文件代码生产者代码消费者代码延时队列优化添加普通队列配置代码生产者发送消息是进行设置消息的ttl 通过MQ 插件实现延时队列代码架构图配置交换机生产者代码消费者代码测试发送 添加依赖 !-- rabbitMQ … 延时队列 添加依赖配置文件队列TTL代码架构图交换机、队列、绑定配置文件代码生产者代码消费者代码延时队列优化添加普通队列配置代码生产者发送消息是进行设置消息的ttl 通过MQ 插件实现延时队列代码架构图配置交换机生产者代码消费者代码测试发送 添加依赖 !-- rabbitMQ 集成 spring boot --dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-amqp/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactIdscopetest/scope/dependencydependencygroupIdcom.alibaba/groupIdartifactIdfastjson/artifactIdversion1.2.47/version/dependencydependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactId/dependency!--swagger--dependencygroupIdio.springfox/groupIdartifactIdspringfox-swagger2/artifactIdversion2.9.2/version/dependencydependencygroupIdio.springfox/groupIdartifactIdspringfox-swagger-ui/artifactIdversion2.9.2/version/dependency!--RabbitMQ 测试依赖--dependencygroupIdorg.springframework.amqp/groupIdartifactIdspring-rabbit-test/artifactIdscopetest/scope/dependency配置文件
spring.rabbitmq.hostlocalhost
spring.rabbitmq.port5672
spring.rabbitmq.usernameguest
spring.rabbitmq.passwordguest队列TTL
代码架构图
创建两个队列 QA 和 QB两者队列 TTL 分别设置为 10S 和 40S然后在创建一个交换机 X 和死信交换机 Y它们的类型都是 direct创建一个死信队列 QD它们的绑定关系如下
交换机、队列、绑定配置文件代码
package com.wlj.rabbitmq.sbmq.confing;import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.util.HashMap;/***创建人 wlj*创建时间 2023/8/16*描述 MQ配置*/
Configuration
public class TtlQueueConfig {//X交换机public static final String X_EXCHANGE X;//QA队列public static final String QUEUE_A QA;//QB队列public static final String QUEUE_B QB;//Y死信交换机public static final String Y_DEAD_LETTER_EXCHANGE Y;//QD死信队列public static final String DEAD_LETTER_QUEUE QD;//声明x交换机Bean(xExchange)public DirectExchange xExchange(){return new DirectExchange(X_EXCHANGE);}//声明y交换机Bean(yExchange)public DirectExchange yExchange(){return new DirectExchange(Y_DEAD_LETTER_EXCHANGE);}//声明QA队列 ttl为10秒 并绑定对应的死信交换机Bean(queueA)public Queue queueA(){HashMapString, Object args new HashMap();//声明当前队列绑定的死信交换机args.put(x-dead-letter-exchange, Y_DEAD_LETTER_EXCHANGE);//声明当前队列的死信路由 keyargs.put(x-dead-letter-routing-key, YD);//声明队列的 TTLargs.put(x-message-ttl, 10000);return QueueBuilder.durable(QUEUE_A).withArguments(args).build();}//声明QB队列 ttl为40秒 并绑定对应的死信交换机Bean(queueB)public Queue queueB(){HashMapString, Object args new HashMap();//声明当前队列绑定的死信交换机args.put(x-dead-letter-exchange, Y_DEAD_LETTER_EXCHANGE);//声明当前队列的死信路由 keyargs.put(x-dead-letter-routing-key, YD);//声明队列的 TTLargs.put(x-message-ttl, 40000);return QueueBuilder.durable(QUEUE_B).withArguments(args).build();}//设置队列QA 绑定交换机XBeanpublic Binding queueaBindingX(Qualifier(queueA)Queue queueA,Qualifier(xExchange)DirectExchange xExchange){return BindingBuilder.bind(queueA).to(xExchange).with(XA);}//设置队列QB 绑定交换机XBeanpublic Binding queuebBindingX(Qualifier(queueB)Queue queueB,Qualifier(xExchange)DirectExchange xExchange){return BindingBuilder.bind(queueB).to(xExchange).with(XB);}//声明死信队列QDBean(queueD)public Queue queueD(){return QueueBuilder.durable(DEAD_LETTER_QUEUE).build();}//死信队列和死信交换机绑定Beanpublic Binding queuedBind(Qualifier(queueD) Queue queueD,Qualifier(yExchange) DirectExchange yExchange){return BindingBuilder.bind(queueD).to(yExchange).with(YD);}
}
生产者代码
package com.wlj.rabbitmq.sbmq.confing.controller;import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import javax.annotation.Resource;
import java.util.Date;/***创建人 wlj*创建时间 2023/8/16*描述 生产者controller*/
Slf4j
RestController
RequestMapping(ttl)
public class MsgController {ResourceRabbitTemplate rabbitTemplate;GetMapping(/send/{msg})public void sendMsg(PathVariable String msg){log.info(当前时间{},发送一条信息给两个 TTL 队列:{}, new Date(), msg);rabbitTemplate.convertAndSend(X,XA,发送的消息延时10秒: msg);rabbitTemplate.convertAndSend(X,XB,发送的消息延时40秒: msg);}
}
消费者代码
package com.wlj.rabbitmq.sbmq.confing.dead;import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Channel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;import java.util.Date;/***创建人 wlj*创建时间 2023/8/16*描述 消费者*/
Component
Slf4j
public class DeadLetterQueueConsumer {RabbitListener(queues QD)public void getMsg(Message msg, Channel channel){System.out.println(new String(msg.getBody()));log.info(当前时间{},收到死信队列信息{}, new Date().toString(), msg);}
}
发送测试 http://localhost:8080/ttl/send/嘻嘻嘻 以上代码声明队列的时候设置队列的延时时间是10秒和40秒意味着所有进入队列的消息都是根据队列的延时时间的。这就会有一个问题如果说业务需要延时20秒、15秒、一分钟、等等等等难道都需要创建每一种延时队列吗那岂不是要增加无数个队列才能满足需求。下面就进行优化延时队列
延时队列优化
代码架构图 声明一个普通的队列只需要在生产消息的时候设置消息的延时时间即可。
添加普通队列配置代码 //声明普通队列QC代码Bean(queueC)public Queue queueC(){HashMapString, Object args new HashMap();//声明当前队列绑定的死信交换机args.put(x-dead-letter-exchange, Y_DEAD_LETTER_EXCHANGE);//声明当前队列的死信路由 keyargs.put(x-dead-letter-routing-key, YD);return QueueBuilder.durable(QUEUE_C).withArguments(args).build();}//设置QC队列和X交换机绑定Beanpublic Binding queuecBindX(Qualifier(queueC)Queue queueC,Qualifier(xExchange)DirectExchange xExchange){return BindingBuilder.bind(queueC).to(xExchange).with(XC);}生产者发送消息是进行设置消息的ttl
GetMapping(/send/{msg}/{ttl})public void sendMsgTtl(PathVariable String msg,PathVariable String ttl){rabbitTemplate.convertAndSend(X,XC,msg,correlationData-{correlationData.getMessageProperties().setExpiration(ttl);return correlationData;});log.info(当前时间{},发送一条时长{}毫秒 TTL 信息给队列 C:{}, new Date(),ttl, msg);}发送测试 http://localhost:8080/ttl/send/嘻嘻嘻/20000 http://localhost:8080/ttl/send/哈哈哈/2000 消息可能并不会按时“死亡“因为 RabbitMQ 只会检查第一个消息是否过期如果过期则丢到死信队列 如果第一个消息的延时时长很长而第二个消息的延时时长很短第二个消息并不会优先得到执行。
通过MQ 插件实现延时队列
Windows 安装MQ延时插件请查看 Linux 安装MQ延时插件请查看
代码架构图
延时队列是交换机进行把控消息的ttl。ttl到期才会发送到对应到队列 在这里新增了一个队列 delayed.queue,一个自定义交换机 delayed.exchange绑定关系如下
配置交换机
package com.wlj.rabbitmq.sbmq.confing.plugins;import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;import java.util.HashMap;/***创建人 wlj*创建时间 2023/8/16*描述 基于插件实现延时消息发送*/
Component
public class DelayedQueueConfig {//队列public static final String DELAYED_QUEUE_NAME delayed.queue;//交换机public static final String DELAYED_EXCHANGE_NAME delayed.exchange;//routingkeypublic static final String DELAYED_ROUTING_KEY delayed.routingkey;//声明队列Beanpublic Queue delayedQueue(){return QueueBuilder.durable(DELAYED_QUEUE_NAME).build();}/*** 声明交换机* 因为交换机的类型没有延时类型 所以使用自定义交换机*/Beanpublic CustomExchange delayedExchange(){HashMapString, Object args new HashMap();//自定义交换机的类型args.put(x-delayed-type, direct);// 对应参数: 交换机的名称 x-delayed-message说明是延时消息交换机 是否序列化 是否自动删除,参数return new CustomExchange(DELAYED_EXCHANGE_NAME,x-delayed-message,true,false,args);}//进行绑定Beanpublic Binding bindingDelayedQueue(Qualifier(delayedQueue) Queue queue,Qualifier(delayedExchange) CustomExchangedelayedExchange) {return BindingBuilder.bind(queue).to(delayedExchange).with(DELAYED_ROUTING_KEY).noargs();}
}
生产者代码 public static final String DELAYED_EXCHANGE_NAME delayed.exchange;public static final String DELAYED_ROUTING_KEY delayed.routingkey;GetMapping(sendDelayMsg/{message}/{delayTime})public void sendMsg(PathVariable String message,PathVariable Integer delayTime) {rabbitTemplate.convertAndSend(DELAYED_EXCHANGE_NAME, DELAYED_ROUTING_KEY, message,correlationData -{correlationData.getMessageProperties().setDelay(delayTime);return correlationData;});log.info( 当 前 时 间 {}, 发送一条延迟 {} 毫秒的信息给队列 delayed.queue:{}, new Date(),delayTime, message);}消费者代码 public static final String DELAYED_QUEUE_NAME delayed.queue;RabbitListener(queues DELAYED_QUEUE_NAME)public void receiveDelayedQueue(Message message){String msg new String(message.getBody());log.info(当前时间{},收到延时队列的消息{}, new Date().toString(), msg);}测试发送
http://localhost:8080/ttl/sendDelayMsg/qwer/20000 http://localhost:8080/ttl/sendDelayMsg/121212/2000
