1. Overview. In this tutorial, we will learn about Hexagonal Architecture and its benefits with the help of SpringBootApplication. We will cover a practical example in this tutorial that will help you to understand the core concept of PORTS and ADAPTERS aka Hexagonal Architecture which is used in the n-tire application. In this tutorial, we’ll take a look into the hexagonal architecture in Java. To illustrate this further, we’ll create a Spring Boot application. The hexagonal architecture describes a pattern java, architechture, hexagonal architecture, domain layer, port, adapter, application layer, infrastructure layers, tutorial Opinions expressed by DZone contributors are their own. Comments 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. Applicability. Use Hexagonal Architecture pattern when Hexagonal architecture is a model or pattern for designing software applications. The idea behind it is to put inputs and outputs at the edges of your design. In a hexagonal architecture, this service is an adapter that implements the port. Additionally, we'll not register it as a Spring bean because, from a domain perspective, this is in the inside part, and Spring configuration is on the outside. We'll manually wire it with Spring in the infrastructure layer a bit later. Hexagonal architecture is an application design pattern. It solves some problems of the layered architecture by introducing ports-and-adapter for the dependencies between our components of the application toward our domain objects. The domain objects are the core part of the application and it is the part of inside a hexagon. The name hexagonal architecture comes from the way this architecture is usually depicted: We are going to return to why hexagons are used later in this article. This arhictecture also goes under the names ports and adapters (which better explains the central idea behind it) and onion architecture (because of how it is layered).
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