IoT applications enhance business processes by triggering events, generating reports, or driving business dashboards. IoT applications use a variety of protocols to accomplish their mission. They consume data from many types of devices. There are many protocols we can use to create Internet of Things (IoT) applications. We use different protocols depending on the use case and the software environment. A new generation of protocols, such as AMQP, MQTT, and CoAP facilitate communication among IoT devices.
What is AMQP
The Advanced Message Queuing Protocol (AMQP) is an open-source standard. AMQP enables organizations or applications to exchange business messages with complete functional interoperability. It provides connections between systems, feeds the essential information to business processes, and transmits instructions that accomplish objectives.
AMPQ provides a message bus architecture. AMPQ is suitable for messaging with high velocity and low latency. This is great for publishing to the message bus and offering it to Web applications and data services. A publish-subscribe (pub-sub) model is used to distribute data from connected devices to services.
Features of AMQP
AMQP has standardization, open source, reliability, interoperability, and security. Also, there are many benefits to binary protocols, such as negotiation, multichannel, portability, energy efficiency, and asynchronous messaging.
How AMQP functions ?
A typical AMQP comprises two layers: a functional layer and a transport layer. The functional layer defines the commands for applications to function. The transport layer carries different techniques between the server and application, such as framing, channel multiplexing, data representation.
Key Capabilities: Why to choose AMQP ?
The AMQP protocol allows connections between applications in different organizations and on a variety of platforms. AMQP can operate over unreliable networks. The AMPQ protocol is becoming popular because of its high velocity, low latency messages, which are suitable for IoT scenarios. AMQP revolutionized the business system by innovation and new openings in commerce.
How AMQP differs from MQTT ?
MQTT and AMQP are two different protocols. We prefer the AMQP protocol for server-to-server communication. However, MQTT offers better handling of time series data.
AMQP links the Producer, Message Broker, and Consumer. A producer/publisher creates a message and sends it to the Broker, as in any other messaging system. The Broker routes the message to one or more Queues based on the bindings associated with it.
Publisher. The AMQP Publisher application sends messages to AMQP Exchange servers. As the protocol is language-independent, it is possible to write a publisher/producer in any language.
Message. Publishers produce messages that contain all the necessary information including source, headers, properties, and routing.
Message Broker. The Broker in AMQP is the middleware server in charge of delivering messages to the correct receivers. Producers and consumers communicate with one other through brokers. Message Brokers are servers like ActiveMQ, RabbitMQ that handle routing the messages. The message broker can have multiple components like Queues, Topics, Exchanges, etc, depending on the vendor.
Subscriber. Subscriber is an AMQP client that accepts messages and acknowledges them to the message broker. It's also known as a consumer.
Message Exchange. When an Exchange receives a message from a producer, it routes the message to the appropriate Queues based on the binding.
Message Queue. A Queue from the Exchange receives the message, which then passes it to the consumer. If the consumer is not ready to receive, it stores the message on disc or in memory.
Binding. The link between a Queue and an Exchange is known as binding.
Routing Key. Exchange determines how to route the message to a Queue based on the routing keys. It’s like a street address.
Conclusion: AMQP is a message protocol for sending and receiving messages between publishers and consumers. A publish-subscribe (pub-sub) model is used to distribute data from connected devices to services. Publishers create the messages, and the consumers pick them and process. AMQP enables organizations or applications to exchange business messages with complete functional interoperability. AMPQ is suitable for messaging with high velocity and low latency.