.NET Core Application - HttpClient, IHttpClientFactory and the middleware

Startup.cs

// Code for Startup.cs 
public class Startup
{
    // Some other code... 
    
    public void ConfigureServices(IServiceCollection services)
    {
        // AddHttpClient middleware to register IHttpClientFactory dependencies
        services.AddHttpClient();
        
        services.AddControllersWithViews();
    }
    
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        // Configure request pipeline
        // Some middlewares
    }
}

// Code for HomeController.cs 
public class HomeController : Controller
{
    private readonly ILogger<HomeController> _logger;
    private readonly IHttpClientFactory _clientFactory;

    public HomeController(ILogger<HomeController> logger, IHttpClientFactory clientFactory)
    {
        _logger = logger;
        _clientFactory = clientFactory;
    }

    public async Task<IActionResult> Index()
    {
        // Http Request
        var request = new HttpRequestMessage(HttpMethod.Get, 
                        "https://api.github.com/repos/dotnet/AspNetCore.Docs/branches");
        
        // Http Headers
        request.Headers.Add("Accept", "application/vnd.github.v3+json");
        request.Headers.Add("User-Agent", "HttpClientFactory-Sample");

        // Create HttpClient instance
        var client = _clientFactory.CreateClient();

        // HTTP API call
        var response = await client.SendAsync(request);

        // Handle Successful Response (or Error)
        if (response.IsSuccessStatusCode)
        {
            using var responseStream = await response.Content.ReadAsStreamAsync();
            dynamic branches = await JsonSerializer.DeserializeAsync
                                <IEnumerable<dynamic>>(responseStream);
        }
        else
        {
            // Error Handling
        }
        return View();
    }
}