What is RabbitTemplate?

What is RabbitTemplate?

public class RabbitTemplate extends RabbitAccessor implements BeanFactoryAware, RabbitOperations, MessageListener, ListenerContainerAware, PublisherCallbackChannel.Listener, BeanNameAware, DisposableBean. Helper class that simplifies synchronous RabbitMQ access (sending and receiving messages).

What is RabbitAdmin?

The RabbitAdmin component can declare exchanges, queues and bindings on startup. It does this lazily, through a ConnectionListener, so if the broker is not present on startup it doesn’t matter. The first time a Connection is used (e.g. by sending a message) the listener will fire and the admin features will be applied.

What is Simplemessagelistenercontainer?

Message listener container that uses the plain JMS client API’s MessageConsumer. setMessageListener() method to create concurrent MessageConsumers for the specified listeners. This is the simplest form of a message listener container.

What is AMQP template?

The Spring AMQP project applies core Spring concepts to the development of AMQP-based messaging solutions. It provides a “template” as a high-level abstraction for sending and receiving messages. It also provides support for Message-driven POJOs with a “listener container”.

Is RabbitTemplate thread safe?

AmqpTemplate is the interface, and RabbitTemplate is the implementation, and I assume by “thread-safe” you mean that its send/receive/sendAndReceive methods may be used concurrently. If so, then YES.

What is RabbitMQ example?

RabbitMQ Example. A message broker acts as a middleman for various services (e.g. a web application, as in this example). They can be used to reduce loads and delivery times of web application servers by delegating tasks that would normally take up a lot of time or resources to a third party that has no other job.

What is Spring AMQP?

Spring AMQP is the Spring implementation of AMQP-based messaging solutions. Spring AMQP provides us a “template” as a high-level abstraction for sending and receiving messages.

How does Spring AMQP work?

3.2. AMQP Entities

1. Exchanges are like post offices or mailboxes and clients publish a message to an AMQP exchange. There are four built-in exchange types.
2. Queues are bound to an exchange using a routing key.
3. Messages are sent to an exchange with a routing key. The exchange then distributes copies of messages to queues.

What is AMQP exchange?

What are AMQP exchanges? An exchange accepts messages from a producer application and routes them to message queues. They can be thought of as the “mailboxes” of the AMQP world. Unlike some other messaging middleware products and protocols, in AMQP, messages are not published directly to queues.

What is RabbitMQ template?

Register the Listener and Send a Message. Spring AMQP’s RabbitTemplate provides everything you need to send and receive messages with RabbitMQ. However, you need to: Configure a message listener container. Declare the queue, the exchange, and the binding between them.

What is routing key in RabbitMQ?

The routing key is a message attribute added to the message header by the producer. Think of the routing key as an “address” that the exchange is using to decide how to route the message. A message goes to the queue(s) with the binding key that exactly matches the routing key of the message.

What is RabbitMQ written in?

Erlang
RabbitMQ/Programming languages
Written in Erlang, the RabbitMQ server is built on the Open Telecom Platform framework for clustering and failover. Client libraries to interface with the broker are available for all major programming languages.