C# 10 Intermittent Deadlock When Using Async/Await with SemaphoreSlim in Web API
I've been struggling with this for a few days now and could really use some help. I'm experiencing intermittent deadlocks in my ASP.NET Core Web API when using `SemaphoreSlim` to limit concurrent access to a resource. Here’s a snippet of my code: ```csharp private static SemaphoreSlim semaphore = new SemaphoreSlim(2); public async Task<IActionResult> ProcessRequestAsync() { await semaphore.WaitAsync(); try { // Simulate a long-running task await Task.Delay(5000); // Process the request return Ok("Request processed"); } finally { semaphore.Release(); } } ``` The deadlock occurs occasionally when multiple requests hit the endpoint simultaneously, and I see the following behavior in my logs: `System.Threading.SemaphoreFullException: The semaphore is full`. I’ve ensured that every `WaitAsync` has a corresponding `Release`, and I’m using `async/await` correctly to avoid blocking the thread. I tried increasing the initial count of `SemaphoreSlim` to 4 and tested it with fewer simultaneous requests, which seemed to reduce the deadlock occurrences, but didn’t eliminate them entirely. I am also aware that using a `SemaphoreSlim` can lead to potential complications with async calls, but I need to pinpoint where I might be going wrong. Is there a better way to handle this scenario, or am I missing something in my implementation? Any advice would be greatly appreciated! Any ideas what could be causing this? This is part of a larger mobile app I'm building. Any ideas how to fix this?