Message Queue 消息队列

Full Stack
Catalogue
  1. 1. What is Message Queue
  2. 2. Application
    1. 2.1. Message Queue in Real Life
  3. 3. AMPQ协议
    1. 3.1. Message Queue Protocol
    2. 3.2. Network wire-level protocol
    3. 3.3. AMQP Model
  4. 4. RabbitMQ
    1. 4.1. RabiitMQ Solution

参考资料:

What is Message Queue

  • A message queue is a queue of messages sent between applications. 中间人
  • Message queues provide an asynchronous communications protocol, meaning that the sender and receiver of the message do not need to interact with the message queue at the same time.
  • An application framework for sending and receiving messages
  • A way to communicate between applications / systems
  • A way to decouple components
  • A way to offload work (handle to another worker)

Application

  • Allow web servers to respond to requests quickly instead of being forced to perform resource-heavy procedures.
  • Able to distribute a message to multiple recipients for consumption or for balancing loads between workers.
  • 消息队列中间件是分布式系统中重要的组件，主要解决应用耦合，异步消息，流量削锋等问题。实现高性能，高可用，可伸缩和最终一致性架构。是大型分布式系统不可缺少的中间件。
  • 目前在生产环境，使用较多的消息队列有ActiveMQ，RabbitMQ，ZeroMQ，Kafka，MetaMQ，RocketMQ等。

Message Queue in Real Life

对实时性要求不高的任务！

  • Image Resizing
  • Video Processing
  • Sending out Emails (Ad Campaigns)
  • Log Analysis
  • …

AMPQ协议

Message Queue Protocol

  • AMQP - Advanced Message Queue Protocol (RabbitMQ)
  • STOMP - Streaming Text Oriented Messaging Protocol (ActiveMQ)
  • XMPP - Extensible Messaging and Presence Protocol

Network wire-level protocol

  • Defines how clients and brokers talk
  • Data serialization, heartbeat

AMQP Model

  • Defines routing and storing of messages
  • Defines rules how these are wired together
  • Exported API

RabbitMQ

  • RabbitMQ是流行的开源消息队列系统，用erlang语言开发。RabbitMQ是AMQP（高级消息队列协议）的标准实现。Implements AMQP
  • Easy to use, 支持多种客户端，如：Python、Ruby、.NET、Java、JMS、C、PHP、ActionScript、XMPP、STOMP等，支持AJAX，持久化。用于在分布式系统中存储转发消息，在易用性、扩展性、高可用性等方面表现不俗。
  • Open source and commercially supported

RabiitMQ Solution

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