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我在常規控制檯應用程序中使用了以下簡單代碼,並且會期望(某些)命令被並行使用。我認爲UseConcurrencyLimit
會設置併發線程的數量。我所看到的是,RabbitMQ確實有10個未消息的消息,但是消費者將它們串行消費,每個console.writeline之間停頓一秒鐘。我必須錯過明顯的東西,但我不明白。爲什麼MassTransit只在單個線程上使用消息
public static class EventHandler
{
public static void Run()
{
var personQueueName = "RabbitMqPoc.Person";
var busControl = Bus.Factory.CreateUsingRabbitMq(cfg =>
{
cfg.UseConcurrencyLimit(10);
var host = cfg.Host(new Uri("rabbitmq://localhost"), h =>
{
h.Username("guest");
h.Password("guest");
});
cfg.ReceiveEndpoint(host, personQueueName, e =>
{
e.UseConcurrencyLimit(10);
e.PrefetchCount = 10;
e.Consumer<PersonConsumer>();
});
});
var personSendEndpoint = busControl.GetSendEndpoint(new Uri($"rabbitmq://localhost/{personQueueName}")).Result;
busControl.Start();
foreach (var x in Enumerable.Range(1, 20))
{
personSendEndpoint.Send(new PersonUpdated() { Name = "Mina Ives", Key = Guid.NewGuid() });
}
Console.ReadLine();
busControl.Stop();
}
}
internal class PersonConsumer : IConsumer<IPersonUpdated>
{
public async Task Consume(ConsumeContext<IPersonUpdated> context)
{
Thread.Sleep(1000);
Console.WriteLine($"Updated {context.Message.Name}");
}
}