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Masasi Arai

Solutions Architect | Developer | Blogger

  • Blog Posts
    • WordPress
    • GIT
    • DotNet Framework
    • C#
    • Software Architecture and Practices
    • Docker
  • Courses
    • Unit Testing in .NET and C# with NUnit and MOQ
  • Projects
    • Marai.UI
    • Marai MD Viewer
    • Marai Bridgetor
    • Marai Cryptography
    • Marai Light Mapper
  • About Me
  • Need Help?
Masasi Arai

Solutions Architect | Developer | Blogger

Working with SignalR in .NET Core

Hi! In this post, I’ll share how we used SignalR in .NET Core to build a real-time API Health Check Dashboard, something we actually deployed,…

Read MoreWorking with SignalR in .NET Core
  • Assi Arai
  • May 25, 2025

Async Programming in .NET: Best Practices

I still remember one of my early projects using .NET. It was a service integration task, I had to call an external API to retrieve…

Read MoreAsync Programming in .NET: Best Practices
  • Assi Arai
  • May 18, 2025

Stop Over Engineering Your DTO Mapping in .NET

In my earlier projects, I always reached for third-party libraries whenever I needed to map domain models to DTOs. It felt like the standard approach.…

Read MoreStop Over Engineering Your DTO Mapping in .NET
  • Assi Arai
  • May 12, 2025

Building Multi-Tenant Applications in .NET

When I started working on a payroll and HR system for multiple clients, the biggest technical hurdle was building it as a multi-tenant application. Each…

Read MoreBuilding Multi-Tenant Applications in .NET
  • Assi Arai
  • May 4, 2025

Entity Framework Core: Migrations Explained

Today, I want to share a bit of my journey while working on a real-world project where I had to manage database changes properly using…

Read MoreEntity Framework Core: Migrations Explained
  • Assi Arai
  • April 26, 2025

Clean Architecture: A Comprehensive Introduction to Building Scalable Systems

I want to talk to you today about something that changed the way I build software: Clean Architecture. If you’re like me, you’ve probably worked…

Read MoreClean Architecture: A Comprehensive Introduction to Building Scalable Systems
  • Assi Arai
  • April 17, 2025

Struggling with Tight Coupling? Use Dependency Injection in .NET

Hey there, fellow developer! We recently talked about Dependency Injection (DI) in .NET. We covered the basics, the three main service lifetimes, and how to…

Read MoreStruggling with Tight Coupling? Use Dependency Injection in .NET
  • Assi Arai
  • April 5, 2025

Dependency Injection in .NET Explained: AddTransient vs AddScoped vs AddSingleton

Hey there! If you’ve been following along with my blog, you know we talked about Dependency Injection (DI) in .NET. We discussed how it makes…

Read MoreDependency Injection in .NET Explained: AddTransient vs AddScoped vs AddSingleton
  • Assi Arai
  • April 5, 2025

What Is Dependency Injection in .NET? A Complete Beginner’s Guide

I’m here to discuss Dependency Injection. My approach in this blog will be slightly different from the previous one. Since Dependency Injection is a broad…

Read MoreWhat Is Dependency Injection in .NET? A Complete Beginner’s Guide
  • Assi Arai
  • April 3, 2025

Understanding LINQ: Core Concepts Every Developer Should Know

When I was working on a recent .NET Core project, specifically on the SOA (Statement of Account) generation service, I encountered a familiar challenge; how…

Read MoreUnderstanding LINQ: Core Concepts Every Developer Should Know
  • Assi Arai
  • March 22, 2025
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How I Implemented Row-Level Security in EF Core

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Through marai.dev, my mission is to provide accessible, in-depth content that covers a wide range of IT topics, particularly focused on practical, hands-on development in applications and websites. By sharing personal experiences, tutorials, and industry insights, I aim to support and guide developers at every stage of their journey, encouraging a proactive and solution-oriented approach to technology.

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