Building Lightweight Services in ASP.NET Core 6: A Step-by-Step Guide

When developing web applications in ASP.NET Core, there may be instances where you need to create lightweight services — services that do not include a template or controller class, which helps in reducing resource consumption and enhancing application performance. These types of services can be built efficiently using either the Startup or Program class in ASP.NET Core. This guide explores how to build such lightweight services in ASP.NET Core 6, which can be beneficial for small-scale or microservices-based applications.

To follow along with the code examples in this guide, you should have Visual Studio 2022 installed on your machine. If you don’t have it yet, you can easily download it from the official website. Visual Studio 2022 provides an integrated development environment (IDE) that simplifies building and managing ASP.NET Core projects, especially when working with services that need to be lightweight and optimized.

The first step in building a lightweight service in ASP.NET Core 6 is to create a new project. Open Visual Studio 2022 and follow these steps to set up an ASP.NET Core Web API project:

1. Launch the Visual Studio 2022 IDE.
2. Click on “Create a new project.”
3. From the project template options, select “ASP.NET Core Web API.”
4. Click “Next” to proceed.
5. In the “Configure your new project” window, choose a project name and location.
6. Optionally, check “Place solution and project in the same directory” depending on your organizational preferences.
7. Click “Next.”
8. In the “Additional Information” window, select .NET 6.0 (Preview) as the target framework.
9. Uncheck options like “Enable Docker,” “Configure for HTTPS,” and “Enable Open API Support” since they are not required for this tutorial.
10. Finally, click “Create.”

Once you have created the new ASP.NET Core 6 Web API project, you can start implementing lightweight services without the need for the heavier infrastructure typically associated with larger applications. In the next sections, we’ll walk you through setting up these services step by step.