🔑 Keyed Services in .NET Core 8: The Death of the Factory Pattern? 🔑

In the world of .NET Core 8, we're always looking for ways to write cleaner, more maintainable code. One of the most significant recent developments in this area is the introduction of "Keyed Services" 🎉.

Keyed Services allow us to register multiple implementations of an interface with a unique key 🔑. We can then retrieve the specific implementation we need at runtime using this key. This is a significant improvement over the traditional Factory Pattern, where we had to manually control the creation of our objects 🏭.

With this approach, we no longer need to create complex factories or use service locators. Instead, we can rely on the built-in dependency injection container to handle this for us 🧰.

Does this mean the Factory Pattern is dead 💀? Not necessarily. There are still scenarios where the Factory Pattern might be the right choice. However, Keyed Services provide a powerful alternative that can simplify our code and make it more maintainable 🚀.

What are your thoughts on this? Have you used Keyed Services in your projects?

Top comments (5)

Karen Payne • Sep 7

You could provide a working example hosted on GitHub.

Ahmed Shah • Sep 11

@karenpayneoregon here is the practical implementation and git hub code link please like. dev.to/ahmedshahjr/unlock-your-bus...

Ahmed Shah • Sep 7

sorry for the late response was out sure definitely will create one example keep following
linkedin.com/in/ahmedshahjr/

MrMirtel21 • Oct 4

Hey IKeyedServiceProvider is not injectable as far as I know, it should use IServiceProvider instead for that

Ahmed Shah • Oct 7

using KeyedServices.Services;
using Microsoft.AspNetCore.Mvc;

namespace KeyedServices.Controllers
{
[ApiController]
[Route("[controller]")]
public class WeatherForecastController : ControllerBase
{
private static readonly string[] Summaries = new[]
{
"Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
};

    private readonly ILogger<WeatherForecastController> _logger;
    private readonly IEmailService _emailService;

    public WeatherForecastController(ILogger<WeatherForecastController> logger, [FromKeyedServices(nameof(EmailServiceEnum.Gmail))] IEmailService emailService)
    {
        _logger = logger;
        _emailService = emailService;
    }

    [HttpGet(Name = "SendEmail")]
    public string SendEmail()
    {
       return _emailService.SendEmailAsync("Sending Email From");
    }
}

}

its can be intejecate using fromkeyedservice interface.

github.com/ahmedshahjr/Articles/tr...
my repe link

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🔑 Keyed Services in .NET Core 8: The Death of the Factory Pattern? 🔑

Top comments (5)

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