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- #BEST DOMAIN DRIVEN DESIGN BOOK RUBY HOW TO#
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- #BEST DOMAIN DRIVEN DESIGN BOOK RUBY SOFTWARE#
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What I like about this structure is that it is flat. middleware is where a lot of the stuff required by an enterprise application reside, like logging, metrics, circuit breaking and so on.įinally, the service provided by routing is meant to serve as a proxy for the pathfinder service. Repository contains in-memory implementations of the repositories defined in the domain packages. Finally, tracking allows a customer to view details about their cargo.Ĭargo, inspection, location and voyage are pure domain packages that are used by the application services. handling is used by the staff at each location in order to report that a cargo has been received and so on. booking is used by one of our people to book and manage cargos. That is a lot of packages so let me briefly explain them.īooking, handling and tracking contains the application services corresponding to the three use-cases. I wanted a flat directory structure with root-level domain packages with names that communicate what they provide as opposed to what they contain, which meant no domain and interfaces packages.Īt the time of writing, I have the following packages: booking The original application has a structure that is inspired by the Hexagonal Architecture with directories named after each layer such as domain, infrastructure and interfaces.
#BEST DOMAIN DRIVEN DESIGN BOOK RUBY CODE#
Go promotes using packages, not for code organization, but for actually providing cohesive units of functionality.
#BEST DOMAIN DRIVEN DESIGN BOOK RUBY HOW TO#
Something that has also been gradually evolving is how to actually structure the application. I have since then worked on, among other things, reducing stuttering and names and concepts that have felt overly verbose when ported to Go. This was the easy part, because I knew that the initial version was going to be far from pretty and that it was going to be a lot work in making it idiomatic Go. I decided to turn it into a RESTful web service, Java packages were turned into Go packages and domain objects were turned into structs and methods.
#BEST DOMAIN DRIVEN DESIGN BOOK RUBY FULL#
When I started off, my priority was to get it up and running with full functionality, using minimal effort. This article focuses on the core service but I encourage the reader to check out the other applications and how they interact with each other.
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Services like this are typically developed by another team and will most likely have different names for some of the shared concepts.
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pathfinder: The pathfinder service demonstrates the use of a bounded context and returns potential routes between two locations.goddd: The core service is responsible for tasks like booking and tracking cargos.There are three applications involved in this project: The purpose of the project is to provide flexible booking and tracking of large containers that are shipped around the world. If you are interested in learning DDD you really should be reading Domain Driven Design. The reader should be aware of the issues related to sample applications.
#BEST DOMAIN DRIVEN DESIGN BOOK RUBY SOFTWARE#
This application only highlights some of the software patterns in DDD. Hopefully it will be able to serve as inspiration for how a modern enterprise application using domain driven design could look like. This article is intended for both DDD practitioners looking at trying out Go as well as gophers who might not know about DDD but are interested in building enterprise applications. Of course, as a DDD practitioner and a Go developer I thought it might be a fun exercise to try porting it to Go. Since then, the application has been ported to other languages such as C# and Ruby. The purpose was to showcase the concepts from DDD in a real-world application. In 2008, Citerus developed a Java sample application in close collaboration with Eric Evans, based on the examples in his book.