java-design-patterns/message-channel/README.md

---
layout: pattern
title: Message Channel
folder: message-channel
permalink: /patterns/message-channel/
categories: Integration
tags:
 - Java
 - EIP
 - Apache Camel™
---

## Intent
When two applications communicate using a messaging system they do it by using logical addresses
of the system, so called Message Channels.

![alt text](./etc/message-channel.png "Message Channel")

## Applicability
Use the Message Channel pattern when

* two or more applications need to communicate using a messaging system

## Real world examples

* [akka-camel](http://doc.akka.io/docs/akka/snapshot/scala/camel.html)
#143 Added pattern description to index.md 2015-08-22 19:43:21 +03:00			`---`
			`layout: pattern`
			`title: Message Channel`
			`folder: message-channel`
			`permalink: /patterns/message-channel/`
			`categories: Integration`
Work on #190: urm/puml updates * added pumlid where it was missing and possible * removed pumlid where it generated a bad image * regenerated some incorrect puml's * added 'left to right direction' puml prefix to some diagrams to improve the automatic layouting 2017-03-25 22:07:10 +01:00			`tags:`
Add EIP tag to relevant patterns 2015-11-21 16:34:59 +02:00			`- Java`
			`- EIP`
Work on #353: More descriptive Tags * Added the full name for Apache Camel, including the trademark symbol for clarity among other things named "Camel" and to indicate that this is a 3rd party software 2016-01-19 21:28:54 +01:00			`- Apache Camel™`
#143 Added pattern description to index.md 2015-08-22 19:43:21 +03:00			`---`

Use headings instead of bold text in index.md #238 2016-01-03 21:14:30 +01:00			`## Intent`
			`When two applications communicate using a messaging system they do it by using logical addresses`
#143 Added pattern description to index.md 2015-08-22 19:43:21 +03:00			`of the system, so called Message Channels.`

			`![alt text](./etc/message-channel.png "Message Channel")`

Use headings instead of bold text in index.md #238 2016-01-03 21:14:30 +01:00			`## Applicability`
			`Use the Message Channel pattern when`
#143 Added pattern description to index.md 2015-08-22 19:43:21 +03:00
			`* two or more applications need to communicate using a messaging system`
#143 Added real world example 2015-09-02 21:51:14 +03:00
Use headings instead of bold text in index.md #238 2016-01-03 21:14:30 +01:00			`## Real world examples`
#143 Added real world example 2015-09-02 21:51:14 +03:00
Work on #190: urm/puml updates * added pumlid where it was missing and possible * removed pumlid where it generated a bad image * regenerated some incorrect puml's * added 'left to right direction' puml prefix to some diagrams to improve the automatic layouting 2017-03-25 22:07:10 +01:00			`* [akka-camel](http://doc.akka.io/docs/akka/snapshot/scala/camel.html)`