A large number of tools are available in the market that help us in this purpose. Among them is RabbitMQ, a software implementation based on message exchange that decouples in time and space its production and consumption offering high levels of reliability, availability, performance and scalability. In this post we will talk a bit about RabbitMQ, the components that make it up and some of its benefits.
RabbitMQ implements the AMQP (Advanced Message Queueing Protocol) application layer messaging protocol, which is focused on the communication of asynchronous messages with guaranteed delivery, through message reception confirmations from the broker to the producer and from the consumers to the broker.
This component is responsible for receiving messages sent to the broker by a producer and depositing them in the appropriate queue according to a routing key. This means that the producer does not send the messages directly to the queue, but sends them to an exchange with a routing key.
Within a project it is sometimes necessary to integrate with other actors, components, or internal and external systems, being necessary to provide or receive information from them. In most cases, these communications must be permanently available, fast, secure, asynchronous and reliable, among other requirements.
RabbitMQ is a message queuing software called messaging broker or queue manager. Simply put, it is a software where queues can be defined, applications can connect to those queues and transfer/read messages in them. Its main features are:
The basic architecture of a message queue is simple. There are client applications, called producers, that create messages and deliver them to the intermediary (the message queue). Other applications, called consumers, connect to the queue and subscribe to the messages to be processed. A message can include any type of information.
Messages are not published directly to a queue; instead, the producer sends messages to an exchange. Exchanges are message routing agents, defined by virtual hosts within RabbitMQ. An exchange is responsible for routing messages to different queues: it accepts messages from the producer and directs them to message queues with the help of header attributes, bindings and routing keys.
Rabbitmq spring boot
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The AMQP (Advanced Message Queuing Protocol) standard is an open standard protocol at the application layer of a communication system. The defining characteristics of the AMQP protocol are message orientation, queuing, routing (both point-to-point and publish-subscribe), correctness and security. AMQP stipulates the behavior of both the server providing the messages and the server providing the messages. AMQP stipulates the behavior of both the server providing the messages and the server providing the messages.
AMQP stipulates the behavior of both the server providing the messages and the messaging client to the point that implementations from different vendors are truly interoperable, in the same way that SMTP, HTTP, FTP and analogous protocols have created interoperable systems. Other previous attempts to standardize middleware happened at the API level (e.g., JMS) and failed to achieve real interoperability. Unlike JMS, which only defines an API, AMQP is a wire-level protocol. A wire level protocol is a description of the format of the data that is sent over the network as a stream of bytes. Consequently, any program that can create and interpret messages according to this data format can interoperate with any other tool that complies with this protocol, regardless of the implementation language.