一、生产者可靠性
(1)生产者重连(不建议使用)
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logging:
pattern:
dateformat: MM-dd HH:mm:ss:SSS
spring:
rabbitmq:
virtual-host: /hamll
port: 5672
host: 192.168.92.136
username: hmall
password: 123
listener:
simple:
prefetch: 1
connection-timeout: 1s
template:
retry:
enabled: true
initial-interval: 1000ms
multiplier: 1
max-attempts: 3
(2)生产者确认
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引入日志依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</dependency>
二、MQ持久化
(1)持久化介绍
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发送100万条消息给队列,需要先在application.yml中取消生产者确认
publisher-confirm-type: none
publisher-returns: false
没有持久化的测试用例,会出行阻塞的状态:
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改为持久化后的测试用例:
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(2)最好的持久化方式Lazy Queue
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三、消息可靠性
(1)消费者确认
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使用auto自动模式
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(2)失败重试机制
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(3)业务幂等性
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四、延迟消息
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(1)死信交换机
注意:创建的simple.queue需要Add Dead letter exchange,其他都跟之前创建的操作差不多
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监听
@RabbitListener(queues = "dlx.queue")
public void listenDlxQueue(String msg){
log.info("dlx.queue消费者收到消息:"+msg);
}
测试用例
@Test
void testSendTTLMessage(){
rabbitTemplate.convertAndSend("simple.direct", "hi", "hello", new MessagePostProcessor() {
@Override
public Message postProcessMessage(Message message) throws AmqpException {
message.getMessageProperties().setExpiration("10000");
return message;
}
});
log.info("消息发送成功!");
}
(2)延迟消息插件
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(3)取消订单
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