Questions tagged [layers]
Layer (or abstraction level, or a layer of abstraction) is a way of hiding the implementation details of a particular set of functionality.
189 questions
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Should our api-response-to-domain-entity transform functions be in the API/Infrastructure layer, or the Domain layer?
Should our api-response-to-domain-entity transform functions be in the API/Infrastructure layer, or the Domain layer?
We have a react-native mobile application written in TypeScript.
We have separated ...
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3-layer / 3-tier system [closed]
Some years ago, I started using a particular architectural pattern that proved itself useful on a significant number of projects.
It includes the following concepts:
Presentation Layer/Tier that ...
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How to easily avoid circular dependencies
In a legacy project's service layer, there are tens of service classes and among them there is one service, UtilityService using 2 other services:
class UtilityService{
private UserService ...
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Complex stateful logic in MVVM architecture
I'm building a mobile app in Flutter, and the project has several distinct layers. The top part is something better described as MVVM: dumb View layer that performs rendering and delegates actions to ...
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Specific get cases - Repository vs Service
I have a custom repository for each entity/module (I'm working with NestJS). I know that this is a lot of repeated code and I may refactor it in order to use a generic repository later, but currently ...
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What is the responsibility of a typed HttpClient in .NET?
Say I have a simple layered .NET application, with three layers:
API
Adapters
Application
The application layer needs to use some typed http clients to communicate with external APIs. This means that ...
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Is layered architecture style inherently monolithic?
Overall cost and simplicity are the primary strengths of the layered architecture style. Being monolithic in nature, layered architectures don’t have the complexities associated with distributed ...
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In a layered backend architecture is the repository/manager part still relevant? [duplicate]
We all know that in a layered backend architecture we have the Controller (or view) > Service > Repository (or Manager)
The Repository part is the part that retrieves and updates the DB.
But now ...
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Where to specify UI views in a hierarchy of model objects?
In a Flutter app I'm developing, I have a class hierarchy of model objects of a certain base class. To take a typical example, the abstract base class could be Vehicle. Then I have a (pretty much) ...
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How to propagate parameters through several architectural layers?
Overview
I am tasked with designing a system that serves as an Interface between a User and one or more microcontrollers in different Variants.
As an example, our Microcontrollers Type 1 are milk ...
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ASP.NET MVC use ViewModels with Services
I'm trying to make a simple Blog-application, but I'm a bit stuck on the architecture of the application.
I'd like to create a details-page with the content of the blog-post and a form for adding ...
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How to structure an ERP system in a modular way, with module hierarchy and where do application layers stand in this?
I built an asset management system (a web application) using C# ASP.NET in MVC structure. My project is built upon the ASP.NET Boilerplate template, which includes 5 layers by default. These layers ...
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Does it make sense to create seperate data application layers that interact in asp.net mvc?
I work with csv files that after some steps provide the initial data, and with a database that is derived from this data. The database then is read from and written to in many different ways by the ...
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How to separate UI and business logic when they are intertwined by design
I am refactoring a legacy codebase of an Angular SPA.
The central entity of the app is the chat room, and there is a plethora of ways on how to enter a chat from different views all across the app. ...
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To maintain SOLID, should data preparation, conversion, and pre-computation for purposes of saving an object, be separate from data persistence layer?
I am facing a common situation where I am saving some values into database from a business object. I am using a relational database and usually I only need to save a few items that are part of the ...
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