The Hexagonal Architecture is a software architecture proposed by Alistair Cockburn. It is also called Ports and Adapters. It is similar to the Onion Architecture proposed by Jeffrey Palermo.
Alistair Cockburn proposed the Hexagonal Architecture, also called Ports and Adapters. The architecture is similar to the Onion Arcitecture proposed by Jeffrey Palermo.
The fundamental motivation of the approach is to avoid layer-to-layer dependencies usually associated with the N-tier architecture approach. This is achieved by placing all infrastructure, including databases, outside the problem domain.
The problem domain is then completely independent of the required infrastructure (testing, databases, security, etc.). For example, this means that testing database accesses can be done thoroughly without a real database.
