RabbitMQ设置队列TTL实战

- 日理万妓 2021-07-24 23:46 454阅读 0赞

**一 代码**

package com.rabbitmq.ttl;
    
    import com.rabbitmq.client.Channel;
    import com.rabbitmq.client.Connection;
    import com.rabbitmq.client.ConnectionFactory;
    import com.rabbitmq.client.MessageProperties;
    import com.rabbitmq.util.ConnectionUtils;
    
    import java.io.IOException;
    import java.util.HashMap;
    import java.util.Map;
    import java.util.concurrent.TimeoutException;
    
    /**
    * 队列过期
    */
    public class QueueTTL {
        private static final String EXCHANGE_NAME = "exchange_demo";
        private static final String ROUTING_KEY = "routingkey_demo";
        private static final String QUEUE_NAME = "QueueTTL_demo";
        private static final String IP_ADDRESS = "127.0.0.1";
        private static final int PORT = 5672;//RabbitMQ（AMQP） 服务端默认端口号为 5672
        public static void main(String[] args) throws IOException,
                TimeoutException, InterruptedException {
    
            ConnectionFactory factory = new ConnectionFactory();
            factory.setHost(IP_ADDRESS);
            factory.setUsername("root");
            factory.setPassword("123456");
            Connection connection = factory.newConnection();
            Channel channel = connection.createChannel();
            // 创建一个 type="direct" 、持久化的、非自动删除的交换器
            channel.exchangeDeclare(EXCHANGE_NAME, "direct", true, false, null);
            // 创建一个持久化、非排他的、非自动删除的队列
            Map<String, Object> arg = new HashMap<String, Object>(3);
            // 设置队列过期时间，单位：毫秒
            arg.put("x-expires", 10000);
            channel.queueDeclare(QUEUE_NAME, true, false, false, arg);
            // 将交换器与队列通过路由键绑定
            channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, ROUTING_KEY);
            // 发送一条持久化的消息: hello world !
            String message = "Hello World !";
            // 消息发布
            // 第三个参数为mandatory
            channel.basicPublish(EXCHANGE_NAME, ROUTING_KEY, false,
                    MessageProperties.PERSISTENT_TEXT_PLAIN,
                    message.getBytes());
            ConnectionUtils.close(channel, connection);
        }
    }

**二 测试**

1 10秒内队列还存在

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

2 10秒后队列就被过期被删除了

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

**三 参考代码**

[https://github.com/cakin24/RabbitMQDemo/blob/master/src/main/java/com/rabbitmq/ttl/QueueTTL.java][https_github.com_cakin24_RabbitMQDemo_blob_master_src_main_java_com_rabbitmq_ttl_QueueTTL.java]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/aa75ae74c13f4626a3e0a6ea4e247e95.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1]: /images/20210724/3ac9208b91f14ef8b67778928e79d121.png
[https_github.com_cakin24_RabbitMQDemo_blob_master_src_main_java_com_rabbitmq_ttl_QueueTTL.java]: https://github.com/cakin24/RabbitMQDemo/blob/master/src/main/java/com/rabbitmq/ttl/QueueTTL.java