IntialCommit

ChannelsDispatcher/BackgroundInitializer.cs

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+using System.Threading.Channels;
+
+namespace ChannelsDispatcher;
+
+public class BackgroundInitializer
+{
+    private ChannelReader<Func<Task>> _channel;
+    
+    public BackgroundInitializer(ChannelReader<Func<Task>> channel)
+    {
+        _channel = channel;
+    }
+
+
+    public async Task ExecuteAsync()
+    {
+        while (true)
+        {
+            // получили задачу инциализации
+            var task = await _channel.ReadAsync();
+            // исполнили задачу инициализации
+            await task.Invoke();
+        }
+    }
+}

ChannelsDispatcher/ChannelsDispatcher.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>

ChannelsDispatcher/Program.cs

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+// See https://aka.ms/new-console-template for more information
+
+using System.Threading.Channels;
+using ChannelsDispatcher;
+
+//AddSingleton
+var channel = Channel.CreateUnbounded<Func<Task>>();
+//AddSingleton
+var channelReader = channel.Reader;
+//AddSignleton
+var channelWriter = channel.Writer;
+//AddSingleton
+var backgroundWorker = new BackgroundInitializer(channelReader);
+Task.Run(async () => await backgroundWorker.ExecuteAsync());
+//AddScoped/AddTransient
+var viewModel = new ViewModel(channelWriter);
+
+while (true)
+{
+    viewModel.DoUIStuff();
+    await Task.Delay(TimeSpan.FromSeconds(1));
+}

ChannelsDispatcher/ViewModel.cs

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+using System.Text;
+using System.Threading.Channels;
+
+namespace ChannelsDispatcher;
+
+public class ViewModel
+{
+    private ChannelWriter<Func<Task>> _channel;
+    public ViewModel(ChannelWriter<Func<Task>> channel)
+    {
+        _channel = channel;
+        // чтобы не делать Write async, будем пытаться сделать это синхронно
+        bool success = false;
+        do
+        {
+            success = _channel.TryWrite(InitAsync);
+        }
+        while (!success);
+    }
+
+    public async Task InitAsync()
+    {
+        Console.WriteLine("Initialization started. Will took 10 seconds");
+        await Task.Delay(TimeSpan.FromSeconds(10));
+        Console.WriteLine("ViewModel Initialized");
+    }
+
+    public void DoUIStuff()
+    {
+        Console.WriteLine("UI Not Freezed");
+    }
+}