Top RabbitMQ frequently asked interview questions.
In this post we will look at RabbitMQ Interview questions.
Examples are provided with explanations.
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What is Messaging?
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What is RabbitMQ?
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What is Advanced Message Queuing Protocol (AMQP)?
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What is an exchange in RabbitMQ?
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What is routing key in RabbitMQ?
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What is Erlang ? Why is it required for RabbitMQ?
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How to install RabbitMQ?
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How to integrate RabbitMQ with Spring Boot?
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What is Spring Cloud Stream? What is the need for it?
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What are the types of exchanges available in RabbitMQ?
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How to verify RabbitMQ version?
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How to delete all RabbitMQ queues?
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Does RabbitMQ have any concept of message priority?
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What is STOMP?
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How to implement Chat Application using Spring Boot + WebSocket + RabbitMQ?
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How to implement Retry and Error Handling for RabbitMQ?
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How to consume messages from RabbitMQ using Spring Boot?
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What is a Dead Letter Queue?
What is Messaging?
Messaging is a communication mechanism used for system interactions. In software development messaging enables distributed communication that is loosely coupled.
A messaging client can send messages to, and receive messages from, any other client.
The structure of message can be defined as follows-
What is RabbitMQ ?
RabbitMQ is an open source message broker software (sometimes called message-oriented middleware) that implements
the Advanced Message Queuing Protocol (AMQP). The RabbitMQ server is written in the Erlang programming language and
is built on the Open Telecom Platform framework for clustering and failover.
What is Advanced Message Queuing Protocol (AMQP) ?
The Advanced Message Queuing Protocol (AMQP) is an open standard application layer protocol for message-oriented middleware.
AMQP 0-9-1 is a binary messaging protocol and semantic framework for microservices and enterprise messaging.
RabbitMQ is based on AMQP 0-9-1 Protocol.
RabbitMQ supports -
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AMQP 0-9-1
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AMQP 1.0
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MQTT
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STOMP
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HTTP
RabbitMQ Messaging Flow-
Bindings are what connects the exchanges to queues.
What is an exchange in RabbitMQ?
An exchange accepts messages from the producer application and routes them to
message queues with help of header attributes, bindings, and routing keys. A binding
is a "link" that you set up to bind a queue to an exchange.
What is routing key in RabbitMQ?
The routing key is a message attribute.
The routing algorithm behind a direct exchange is simple -
a message goes to the queues whose binding key exactly matches the routing key of the message.