Currently I'm facing a trouble implementing the business logic using clean architecture and cqrs pattern. I'm using Mediatr and AutoMapper to do that. I have the following structure for the cqrs pattern ApplicationCore DTOs SmartphoneDto.cs Features Smartphone Handlers Commands AddSmartphoneCommandHandler.cs…
Scenario I'm using the CQRS pattern for REST services that deal with Sales as in the diagram below. (The question focuses on the REST services.) On K8S I have: A microservice for GET endpoints (queries) that runs on a given…
When I want to update an entity, I face the following error: Message = "The instance of entity type 'Vehicle' cannot be tracked because another instance with the same key value for {'Id'} is already being tracked. When attaching existing…
I'm using ASP, CQRS + MediatR and fluent validation. I want to implement user role validation, but I don't want to mix it with business logic validation. Do you have any idea how to implement this? I mean a specific…
I have following code specification sample that is modelling image inside Photoshop. Image is given with PhotoshopImage. Every image has Layers which is an object that holds all layers that an image is made of and in my case it…
Trying to implement Event Sourcing and CQRS for the first time, but got stuck when it came to persisting the aggregates. This is where I'm at now I've setup "EventStore" an a stream, "foos" Connected to it from node-eventstore-client I…