NooBxGockeL c2a7b902a9 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

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Markdown

---
layout: pattern
title: Layers
folder: layers
permalink: /patterns/layers/
pumlid: BSR13OCm30NGLSe0n7UsCS62L8w9x6yGszD3t-bDpQhc9kdwEO0H2v7pNVQ68zSCyNeQn53gsQbftWns-lB5yoRHTfi70-8Mr3b-8UL7F4XG_otflOpi-W80
pumlformat: svg
categories: Architectural
tags:
- Java
- Difficulty-Intermediate
- Spring
---
## Intent
Layers is an architectural style where software responsibilities are
divided among the different layers of the application.
![alt text](./etc/layers.png "Layers")
## Applicability
Use the Layers architecture when
* you want clearly divide software responsibilities into differents parts of the program
* you want to prevent a change from propagating throughout the application
* you want to make your application more maintainable and testable
## Credits
* [Pattern Oriented Software Architecture Vol I-V](http://www.amazon.com/Pattern-Oriented-Software-Architecture-Volume-Patterns/dp/0471958697)