I’m currently working on an ASP.NET Core web application where users can upload large files asynchronously. I’ve implemented a basic file upload feature using the built-in IFormFile interface, but I’m encountering performance issues with larger files and multiple concurrent uploads.

I’ve researched various approaches, including using HttpClient for chunked uploads and integrating with third-party libraries like Plupload, but I’m unsure which approach would be most suitable for my requirements.

// Basic file upload using IFormFile interface
[HttpPost]
public async Task<IActionResult> Upload(IFormFile file)
{
    if (file != null && file.Length > 0)
    {
        var fileName = Path.GetFileName(file.FileName);
        var filePath = Path.Combine("uploads", fileName);
        using (var fileStream = new FileStream(filePath, FileMode.Create))
        {
            await file.CopyToAsync(fileStream);
        }
        return Ok("File uploaded successfully.");
    }
    return BadRequest("No file uploaded or file is empty.");
}