I have found this on the rabbitmq website it is near the bottom so I have quoted the relevant part below. The tl;dr version is that you should have 1 connection per application and 1 channel per thread. Connections AMQP connections are typically long-lived. AMQP is an application level protocol that uses TCP for reliable … Read more
I am sure what Artem Bilan has explained here might be one of the reasons for this error: Caused by: com.rabbitmq.client.AuthenticationFailureException: ACCESS_REFUSED – Login was refused using authentication mechanism PLAIN. For details see the but the solution for me was that I logged in to rabbitMQ admin page (http://localhost:15672/#/users) with the default user name and … Read more
RabbitMQ is a solid, general-purpose message broker that supports several protocols such as AMQP, MQTT, STOMP, etc. It can handle high throughput. A common use case for RabbitMQ is to handle background jobs or long-running task, such as file scanning, image scaling or PDF conversion. RabbitMQ is also used between microservices, where it serves as … Read more
Add the Channel to the @RabbitListener method… @RabbitListener(queues = “${eventqueue}”) public void receiveMessage(Order order, Channel channel, @Header(AmqpHeaders.DELIVERY_TAG) long tag) throws Exception { … } and use the tag in the basicAck, basicReject. EDIT @SpringBootApplication @EnableRabbit public class So38728668Application { public static void main(String[] args) throws Exception { ConfigurableApplicationContext context = SpringApplication.run(So38728668Application.class, args); context.getBean(RabbitTemplate.class).convertAndSend(“”, “so38728668”, “foo”); … Read more
For now, your best bet is to turn off heartbeats, this will keep RabbitMQ from closing the connection if you’re blocking for too long. I am experimenting with pika’s core connection management and IO loop running in a background thread but it’s not stable enough to release. In pika v1.1.0 this is ConnectionParameters(heartbeat=0)
There are no such feature like retry attempts in RabbitMQ (as well as in AMQP protocol). Possible solution to implement retry attempts limit behavior: Redeliver message if it was not previously redelivered (check redelivered parameter on basic.deliver method – your library should have some interface for this) and drop it and then catch in dead … Read more
A Connection represents a real TCP connection to the message broker, whereas a Channel is a virtual connection (AMQP connection) inside it. This way you can use as many (virtual) connections as you want inside your application without overloading the broker with TCP connections. You can use one Channel for everything. However, if you have … Read more
Can I have each consumer receive the same messages? Ie, both consumers get message 1, 2, 3, 4, 5, 6? What is this called in AMQP/RabbitMQ speak? How is it normally configured? No, not if the consumers are on the same queue. From RabbitMQ’s AMQP Concepts guide: it is important to understand that, in AMQP … Read more
Well, let’s take a closer look at the scenario you are describing above. I think it’s important to paste the documentation immediately prior to the snippet in your question to provide context: Section 4.7 of the AMQP 0-9-1 core specification explains the conditions under which ordering is guaranteed: messages published in one channel, passing through … Read more
It’s new features since the version 3.3.0 http://www.rabbitmq.com/release-notes/README-3.3.0.txt server —— … 25603 prevent access using the default guest/guest credentials except via localhost. If you want enable the guest user read this or this RabbitMQ 3.3.1 can not login with guest/guest # remove guest from loopback_users in rabbitmq.config like this [{rabbit, [{loopback_users, []}]}]. # It is … Read more