EXCHANGE中FANOUT的使用

1、exchange [fanout] 多播
应用场景
1）订单流程：提交订单后，同时发送短信和邮件
2）cs软件弹出消息
普通情况下，使用轮询方式，在cs中绑定fanout exchange，如果存在消息，及时推送
3）客户关怀和千人千面
taobao=> 催付，付款后提醒、发货提醒、签收提醒
=> 给用户关联推荐 彩信、短信、邮件等发送关联推荐

2、代码实现

1）生产者

            //基础配置
            ConnectionFactory factory = new ConnectionFactory()
            {
                HostName = "10.123.44.12",
                UserName = "datamip",
                Password = "datamip"
            };

            //第一步：创建connection
            using (var connection = factory.CreateConnection())
            {
                //第二步：创建channel
                using (var channel = connection.CreateModel())
                {
                    //第三步：创建exchange
                    //channel.ExchangeDeclare("myfanoutexchange", ExchangeType.Fanout, true, false, null);

                    //第四步：发布消息，直接绑定对应的routingkey
                    for (int i = 0; i < 100; i++)
                    {
                        var msg = Encoding.UTF8.GetBytes(string.Format("{0}:{1}", i, "你好"));
                        channel.BasicPublish("myfanoutexchange",string.Empty, basicProperties: null, body: msg);
                    }

                }
            }
            Console.WriteLine("生产成功!");
            Console.ReadKey();

　　

2）消费者

消费者1

//创建连接工厂
            ConnectionFactory factory = new ConnectionFactory
            {
                UserName = "datamip",//用户名
                Password = "datamip",//密码
                HostName = "10.123.44.12"//rabbitmq ip
            };
            //第一步：创建connection
            using (var connection = factory.CreateConnection())
            {
                //第二步：创建channel
                using (var channel = connection.CreateModel())
                {
                    //第三步：生明交换机
                    channel.ExchangeDeclare("myfanoutexchange", ExchangeType.Direct, true, false, null);

                    //第四步：声明队列,绑定交换机
                    channel.QueueDeclare("myfanoutqueue1", true, false, false, null);
                    channel.QueueBind("myfanoutqueue1", "myfanoutexchange", string.Empty, null);

                    //处理消息
                    EventingBasicConsumer consumer = new EventingBasicConsumer(channel);
                    consumer.Received += (sender, e) => {
                        var msg = Encoding.UTF8.GetString(e.Body.ToArray());
                        Console.WriteLine(msg);
                    };
                    //消费
                    channel.BasicConsume("myfanoutqueue1", true, consumer);
                    Console.ReadKey();
                }
            }

消费者2

            //创建连接工厂
            ConnectionFactory factory = new ConnectionFactory
			{
				UserName = "datamip",//用户名
				Password = "datamip",//密码
				HostName = "10.123.44.12"//rabbitmq ip
			};           
            //第一步：创建connection
            using (var connection = factory.CreateConnection())
            {
                //第二步：创建channel
                using (var channel = connection.CreateModel())
                {
                    //第三步：生明交换机
                    channel.ExchangeDeclare("myfanoutexchange", ExchangeType.Direct, true, false, null);

                    //第四步：声明队列,绑定交换机
                    channel.QueueDeclare("myfanoutqueue2",true,false,false,null);
                    channel.QueueBind("myfanoutqueue2", "myfanoutexchange", string.Empty, null);

                    //处理消息
                    EventingBasicConsumer consumer = new EventingBasicConsumer(channel);
                    consumer.Received += (sender,e)=> {
                        var msg = Encoding.UTF8.GetString(e.Body.ToArray());
                        Console.WriteLine(msg);
                    };
                    //消费
                    channel.BasicConsume("myfanoutqueue2", true, consumer);
                    Console.ReadKey();
                }
            }  

　　

3）效果

3、图形解释