C# 11 - Issues with Async Method Returning ValueTask and Memory Leak in HttpClient Usage
Quick question that's been bugging me - I've been struggling with this for a few days now and could really use some help..... I'm currently working with C# 11 and I've implemented an async method that returns a `ValueTask<T>`. However, I'm facing unexpected memory usage issues when the method is invoked several times in a loop. The method looks something like this: ```csharp private static readonly HttpClient _httpClient = new HttpClient(); public async ValueTask<string> FetchDataAsync(string url) { var response = await _httpClient.GetAsync(url); response.EnsureSuccessStatusCode(); return await response.Content.ReadAsStringAsync(); } ``` In my calling code, I’m invoking this method multiple times in a tight loop: ```csharp public async Task ProcessUrlsAsync(IEnumerable<string> urls) { foreach (var url in urls) { var data = await FetchDataAsync(url); // Do something with data } } ``` Despite using `ValueTask`, the memory usage seems to be increasing significantly with each call. I’ve also noticed that if I replace `ValueTask<string>` with `Task<string>`, the memory usage stabilizes, but it introduces some performance overhead that I wanted to avoid. I’ve tried using a single instance of `HttpClient` as recommended, and I’m also disposing the `HttpResponseMessage` after usage, but the issue persists. Additionally, I'm not seeing any specific exceptions or warnings, but the memory profiler indicates a steady increase in allocations. Any insights on why this might be happening or what I might be missing in terms of best practices for using `ValueTask` with `HttpClient`? This is part of a larger application I'm building. Thanks in advance! My development environment is macOS. I'd really appreciate any guidance on this.