Mike Liu c5a4068e84
docs: Translation for zh (#1805)
* add state and callback pattern

* add command and template-method pattern

* add iterator pattern

* add bridege and DI pattern

* fix issue #1600

* add converter,proxy,visitor pattern

* add caching,composite,delegation,dirty-flag,interpreter patterns

* add dao and producer-consumer

* add dto and provate class data pattern

* fix #1646 png path problems

* fix #1646 composite png path case problem

* add abstract document pattern and version-number pattern

* add ambassador pattern

* add acyclic-visitor and api-gateway pattern

* add abstract-factory pattern

* add active-object pattern

* add aggregator-microservices and arrange-act-assert pattern

* update async-method-invocation pattern

* add balking and business-delegate pattern

* add bytecode and circuit-break pattern

* update arrange/act/assert pattern problems

* add csch pattern

* add language code, correct pic path

* #1805 update permalink

Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com>
Co-authored-by: Mike <admin@xiaod.info>
Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>
2021-08-01 20:25:54 +05:30

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---
layout: pattern
title: Data Bus
folder: data-bus
permalink: /patterns/data-bus/
categories: Architectural
language: zh
tags:
- Decoupling
---
## 含义
数据总线模式(译者:实际上,就是 Event-Bus 消息总线模式)允许在一个应用程序的组件之间收发消息/事件,而不需要这些组件相互感知,它们只需要知道所发送/接收的消息/事件的类型即可。
## 类图
![data bus pattern uml diagram](../../../data-bus/etc/data-bus.urm.png "Data Bus pattern")
## 适用场景
可以在以下场景使用数据总线模式:
* 你希望由你的组件自己决定要接收哪些信息/事件
* 你希望实现多对多的通信
* 你希望你的组件不需要感知彼此
## 相关模式
数据总线类似于以下设计模式:
* 中介者模式Mediator pattern由数据总线成员自己决定是否要接受任何给定的消息。
* 观察者模式Observer pattern但进一步支持了多对多的通信。
* 发布/订阅模式Publish/Subscribe pattern但是数据总线将发布者和订阅者解耦。