JackieNim f597fc1b07
fix: Fixed pages showing up in wrong language (#1752)
* Fix languages

* Missed change for version number

* Add language field for presentation

* Revert change in README for double buffer

Co-authored-by: Jackie Nim <=>
2021-05-19 19:49:05 +03:00

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---
layout: pattern
title: Hexagonal Architecture
folder: hexagonal
permalink: /patterns/hexagonal/
pumlformat: svg
categories: Architectural
language: en
tags:
- Decoupling
---
## Also known as
* Ports and Adapters
* Clean Architecture
* Onion Architecture
## Intent
Allow an application to equally be driven by users, programs, automated test or batch scripts, and to be developed and tested in isolation from its eventual run-time devices and databases.
## Class diagram
![Hexagonal Architecture class diagram](./etc/hexagonal.png)
## Applicability
Use Hexagonal Architecture pattern when
* When the application needs to be independent of any frameworks
* When it is important that the application highly maintainable and fully testable
## Tutorials
* [Build Maintainable Systems With Hexagonal Architecture](http://java-design-patterns.com/blog/build-maintainable-systems-with-hexagonal-architecture/)
## Real world examples
* [Apache Isis](https://isis.apache.org/) builds generic UI and REST API directly from the underlying domain objects
## Credits
* [Alistair Cockburn - Hexagonal Architecture](http://alistair.cockburn.us/Hexagonal+architecture)