Types of Message Queues
There are two main types of message queues in system design:
- Point-to-point Message Queue
- Publish-Subscribe Message Queue
Point-to-Point Message Queues
Point-to-point message queues are the simplest type of message queue. When a producer sends a message to a point-to-point queue, the message is stored in the queue until a consumer retrieves it. Once the message is retrieved by a consumer, it is removed from the queue and cannot be processed by any other consumer.
Point-to-point message queues can be used to implement a variety of patterns such as:
- Request-Response: A producer sends a request message to a queue, and a consumer retrieves the message and sends back a response messages.
- Work Queue: Producers send work items to a queue, and consumers retrieve the work items and process them.
- Guaranteed Delivery: Producers send messages to a queue, and consumers can be configured retry retrieving messages until they are successfully processed.
Publish-Subscribe Message Queues
Publish-Subscribe Message Queues are more complex than point-to-point message queues. When a producer publishes a message to publish/subscribe queue, the message is routed to all consumers that are subscribed to the queue. Consumers can subscribe to multiple queues, and they can also unsubscribe from queues at any time.
Publish-Subscribe Message Queues are often used to implement real-time streaming applications, such as social media and stock market tickers. They can also be used to implement event-driven architecture, where components of a system communicate with each other by publishing and subscribing to events.
Message Queues | System Design
A message queues is a form of service-to-service communication that facilitates asynchronous communication. It asynchronously receives messages from producers and sends them to consumers.
Important Topics for the Message Queues
- What is a Message Queue?
- Primary Purpose of Message Queue
- Key Components of a Message Queue System
- How Message Queue Work
- Need of Message Queue
- Use Cases of Message Queues
- Example for Message Queues
- Implementation of Message Queue
- Types of Message Queue
- Message Serialization
- Message Structure
- Message Routing
- Scalability of Message Queues
- Dead Letter Queues
- Securing Message Queues
- Message Prioritization
- Load Balancing of Messages
- Message Queue Implementation in C++
- Conclusion