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C# Memory Leak in ASP.NET Core with IAsyncEnumerable and DbContext

👀 Views: 2 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-03
c# aspnet-core entity-framework memory-leaks async C#

I'm following best practices but Could someone explain Can someone help me understand I've been struggling with this for a few days now and could really use some help... Does anyone know how to I'm experiencing a memory leak in my ASP.NET Core application when using `IAsyncEnumerable<T>` to stream data from a database. The application uses Entity Framework Core 5.0 along with a SQL Server database. I've implemented a method to fetch data like this: ```csharp public async IAsyncEnumerable<MyEntity> GetEntitiesAsync() { await using var context = new MyDbContext(); await foreach (var entity in context.MyEntities.AsAsyncEnumerable()) { yield return entity; } } ``` I consume this method in a controller action as follows: ```csharp public async Task<IActionResult> GetEntities() { var entities = GetEntitiesAsync(); return Ok(await entities.ToListAsync()); } ``` However, after some time, I notice that the memory usage of the application keeps increasing steadily, leading to an OutOfMemoryException eventually. I've already tried disposing of the `DbContext` manually, but it seems like that doesn't resolve the scenario. I've also ensured that I'm not holding onto references to the entities outside their intended scope, and I use `await using` to ensure proper disposal. Still, the memory consumption doesn't stabilize. Is there something I'm missing with the way I'm using `IAsyncEnumerable` or disposing of the `DbContext`? Are there best practices for managing memory effectively in this scenario? This issue appeared after updating to C# stable. For context: I'm using C# on Ubuntu 20.04. Any feedback is welcome! Any advice would be much appreciated. For context: I'm using C# on CentOS. My team is using C# for this microservice. Any advice would be much appreciated. My development environment is Ubuntu 22.04. I'd love to hear your thoughts on this. This issue appeared after updating to C# stable.