Soenneker.Utils.SingletonDictionary 3.0.1046

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dotnet add package Soenneker.Utils.SingletonDictionary --version 3.0.1046

NuGet\Install-Package Soenneker.Utils.SingletonDictionary -Version 3.0.1046

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="Soenneker.Utils.SingletonDictionary" Version="3.0.1046" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="Soenneker.Utils.SingletonDictionary" Version="3.0.1046" />
                    

                            Directory.Packages.props

<PackageReference Include="Soenneker.Utils.SingletonDictionary" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add Soenneker.Utils.SingletonDictionary --version 3.0.1046

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Soenneker.Utils.SingletonDictionary, 3.0.1046"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package Soenneker.Utils.SingletonDictionary@3.0.1046

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=Soenneker.Utils.SingletonDictionary&version=3.0.1046
                    

                            Install as a Cake Addin

#tool nuget:?package=Soenneker.Utils.SingletonDictionary&version=3.0.1046
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Soenneker.Utils.SingletonDictionary

An externally initializing singleton dictionary that uses double-check asynchronous locking, with optional async and sync disposal

Installation

dotnet add package Soenneker.Utils.SingletonDictionary

Example

Below is a long-living HttpClient implementation using SingletonDictionary with different settings. It guarantees only one instance of a particular key is instantiated due to the locking.

public class HttpRequester : IDisposable, IAsyncDisposable
{
    private readonly SingletonDictionary<HttpClient> _clients;

    public HttpRequester()
    {
        // This func will lazily execute once it's retrieved the first time.
        // Other threads calling this at the same moment will asynchronously wait,
        // and then utilize the HttpClient that was created from the first caller.
        _clients = new SingletonDictionary<HttpClient>((args) =>
        {
            var socketsHandler = new SocketsHttpHandler
            {
                PooledConnectionLifetime = TimeSpan.FromMinutes(10),
                MaxConnectionsPerServer = 10
            };

            HttpClient client = new HttpClient(socketsHandler);
            client.Timeout = TimeSpan.FromSeconds((int)args[0]);

            return client;
        });
    }

    public async ValueTask Get()
    {
        // retrieve the singleton async, thus not blocking the calling thread
        await (await _client.Get("100", 100)).GetAsync("https://google.com");
    }

    // Disposal is not necessary for AsyncSingleton unless the type used is IDisposable/IAsyncDisposable
    public ValueTask DisposeAsync()
    {
        GC.SuppressFinalize(false);

        return _client.DisposeAsync();
    }

    public void Dispose()
    {
        GC.SuppressFinalize(false);
        
        _client.Dispose();
    }
}

Product	Compatible and additional computed target framework versions.
.NET	net9.0 is compatible. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 was computed. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.

Product

.NET

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net9.0
- Nito.AsyncEx (>= 5.1.2)
- Soenneker.Extensions.Enumerable (>= 3.0.523)
- Soenneker.Extensions.ValueTask (>= 3.0.86)

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

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