Navigating the .NET Ecosystem: My Take on a Practical Roadmap

Hi everyone, I'm Ellie. I'm a Senior .NET Engineer now, but my career actually started in game development using Unity and C#. That transition from games to backend services gave me what I feel is a unique perspective on the specific challenges developers can face when moving into the .NET ecosystem.

As a mentor, I've recently guided a few engineers through this exact transition. I found myself repeatedly sketching out the same core concepts and tools that seemed essential for day-to-day work in a large-scale company. To help others on the same path, I’ve tried to turn that advice into what I hope is a practical roadmap.

While there are many excellent .NET roadmaps out there, this one is my attempt to capture the day-to-day realities of a .NET engineer. It covers concepts and libraries that I've found to be crucial for building confidence and getting up to speed on real-world projects. I plan to write detailed guides for each of these topics as I work through them with my mentees.

So, here’s the roadmap I've pieced together. It's just my opinion, but I hope you find it helpful.

C# Fundamentals

• Delegates, Actions, and Funcs: Understand the core of event-driven programming in C#.
  

  Delegates — A Simple Introduction

  Ellie ・ Oct 20

  #csharp #dotnet #beginners #programming
  

  Actions — delegates that return void

  Ellie ・ Oct 23

  #beginners #csharp #dotnet
• Asynchronous Programming: Master async/await and the Task Parallel Library for responsive applications.
  

  Async Programming in C#

  Ellie ・ Oct 27

  #dotnet #csharp #beginners #development
• Interfaces and Casting: Grasp these key concepts for building flexible and maintainable object-oriented code.
• HttpClient and HttpClientFactory: Learn the modern way to make HTTP requests.
• Collections: Get comfortable with Dictionary and thread-safe collections like ConcurrentDictionary.
• Date and Time: Understand the difference between DateTime and DateTimeOffset and when to use each.

.NET Core Basics

• Application Setup: Dive into Program.cs and appsettings.json to understand how a .NET application is configured and launched.
  

  The Two Halves of Program.cs in .NET

  Ellie ・ Nov 10

  #beginners #architecture #webdev #dotnet
• Middleware: Learn how to build and use middleware to handle requests and responses in the HTTP pipeline.
• Error and Exception Handling: Implement robust strategies for managing errors gracefully.
• Filters and Attributes: Use filters and attributes to add cross-cutting concerns to your application.

Dependency Injection (DI)

• Service Lifecycles: Understand the different DI lifetimes (Singleton, Scoped, Transient) and how to use them effec tively.

Background Task Scheduling

• Hosted Services: Learn to use IHostedService for running background tasks.
• Hangfire: Explore popular libraries like Hangfire for more advanced job scheduling.

Testing Strategies

Unit Testing:

• Frameworks: NUnit, xUnit
• Assertions: FluentAssertions
• Mocks & Fakes: Moq, AutoFixture

Integration Testing: Use WebApplicationFactory to test your application's components together.

Behavioral Testing: Get familiar with SpecFlow for BDD (Behavior-Driven Development).

End-to-End Testing: Understand the principles of testing your application from the user's perspective.

Essential Libraries

Polly: Implement resilience and transient-fault-handling policies.

Logging: Explore powerful logging frameworks like NLog and Serilog.

Monitoring & Telemetry: Learn to instrument your application with OpenTelemetry and use tools like New Relic.

Caching:

• In-Memory: IMemoryCache, FusionCache
• Distributed: Redis

I hope this roadmap is helpful! I'm excited to start digging into these topics and sharing them here.

Let me know if there is anything I have missed.

Comments

[Lin JunJie]

Great roadmap, Ellie! It's clear, practical, and based on real-world .NET experience. I especially appreciate how you explain each topic not just theoretically, but by connecting it to real-world engineering needs.