AsyncKeyedLock

v8.0.0-beta2

An asynchronous .NET library that allows you to lock based on a key (keyed semaphores), limiting concurrent threads sharing the same key to a specified number, with optional pooling for reducing memory allocations.

MarkCiliaVincenti

async lock key keyed semaphore striped dictionary concurrentdictionary pooling duplicate synchronization

NuGet Stats Changelog

Total Downloads

20.2M

20,171,527

Published

Dec 31, 2025

Latest stable version

Install

.NET CLI

dotnet add package AsyncKeyedLock --version 8.0.0-beta2

Package Manager Console

Install-Package AsyncKeyedLock -Version 8.0.0-beta2

PackageReference

<PackageReference Include="AsyncKeyedLock" Version="8.0.0-beta2" />

Frameworks

net5.0 net6.0 net7.0 net8.0 net9.0 .NETStandard2.0 .NETStandard2.1

Dependencies

System.Threading.Tasks.Extensions

net5.0

[4.6.3, )

System.Threading.Tasks.Extensions

net6.0

[4.6.3, )

System.Threading.Tasks.Extensions

net7.0

[4.6.3, )

System.Threading.Tasks.Extensions

net8.0

[4.6.3, )

System.Threading.Tasks.Extensions

.NETStandard2.0

[4.6.3, )

System.Threading.Tasks.Extensions

.NETStandard2.1

[4.6.3, )

Adoption guide

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Compatibility metadata lists 7 target frameworks; confirm the exact target used by your application.

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