How does this skill help with Hexagonal Architecture?

It defines the Data layer as a dedicated adapter that implements ports defined in the Domain layer, keeping infrastructure separate from business logic.

Does it support database migrations?

Yes, it includes a resilient migration runner with retry logic and exponential backoff to ensure database readiness at startup.

Can I use it with different database providers?

While the examples use Npgsql, the patterns are provider-agnostic and work with SQL Server, MySQL, and other EF-supported databases.

How are entities configured?

It uses the Fluent API with a decentralized approach, applying configurations automatically from the assembly to keep the DbContext clean.

Yes, the skill provides separate base classes for standard repositories (Write) and query-only repositories (Read) to support architectural segregation.

EF Core DDD Persistence Layer

Name: EF Core DDD Persistence Layer
Author: nesbo

bynesbo

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Database Management

Implements a robust data persistence layer using Entity Framework Core within Hexagonal Architecture and Domain-Driven Design patterns.

This skill provides a comprehensive framework for implementing the persistence adapter in a .NET application following Hexagonal Architecture principles. It facilitates a clean separation of concerns by ensuring the Domain layer remains agnostic of EF Core implementation details. Key capabilities include automated DI registration, resilient migration runners with exponential backoff, and a modular repository pattern that supports CQRS. It is ideal for developers building enterprise .NET applications where testability, database schema organization, and adherence to DDD patterns are critical.

Key Features

01Hexagonal Architecture adapter implementation for clean separation of concerns.

02Automated dependency injection registration and assembly scanning for easy setup.

03Base repository implementations supporting both read (query) and write operations.

0424 GitHub stars

05Resilient migration runner with built-in exponential backoff for cloud deployments.

06Modular Fluent API entity configurations with reusable configuration helpers.

Use Cases

01Ensuring reliable database migrations during automated application startup in containerized environments.

02Implementing complex database mappings for Aggregate Roots and child entities.

03Structuring a .NET Web API using Clean Architecture or Hexagonal Architecture.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add nesbo/dotnet-claude-code-skills ef-core-ddd

For use in Claude.ai and ChatGPT

Download Skill