AsyncKeyedLock

An asynchronous .NET Standard 2.0 library that allows you to lock based on a key.

Installation

The recommended means is to use NuGet, but you could also download the source code from here.

Usage

var asyncKeyedLocker = new AsyncKeyedLocker();
using (var lockObj = await asyncKeyedLocker.LockAsync(myObject))
{
	...
}

You can also set the maximum number of requests for the semaphore that can be granted concurrently (set to 1 by default):

var asyncKeyedLocker = new AsyncKeyedLocker(2);

If you would like to see how many concurrent requests there are for a semaphore for a given key:

int myCount = asyncKeyedLocker.GetCount(myObject);

And if for some reason you need to force release the requests in the semaphore for a key:

asyncKeyedLocker.ForceRelease(myObject);

You may also use Dependency Injection to inject an instance of AsyncKeyedLock.

Credits

This library is based on Stephen Cleary's solution.