Nginx reverse proxy example

[hey-red]

I have nginx config similar to https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-3.1#configure-nginx

and processor:

namespace AppThumbnailer
{
    public class ThumbnailWebProcessor : IImageWebProcessor
    {
        private static readonly ResizeOptions _resizeOptions = new ResizeOptions
        {
            Size = new Size(300),
            Mode = ResizeMode.Max
        };

        private static readonly IEnumerable<string> _commands = new[]
        {
            "size"
        };

        public FormattedImage Process(
            FormattedImage image,
            ILogger logger,
            IDictionary<string, string> commands,
            CommandParser parser,
            CultureInfo culture)
        {
            var command = commands.GetValueOrDefault("size");
            if (command == "medium")
            {
                image.Image.Mutate(x => x.Resize(_resizeOptions));

                image.Format = JpegFormat.Instance;
            }

            return image;
        }

        public IEnumerable<string> Commands => _commands;
    }
}

It's works fine, but produces random empty responses(without any app error).
Any have this issue with nginx?

Nginx response:

content-length: 0
date: Sat, 24 Oct 2020 21:50:21 GMT
server: nginx
status: 200
strict-transport-security: max-age=15768000

App log:

info: SixLabors.ImageSharp.Web.Middleware.ImageSharpMiddleware[3]
[31891]: Sending image. Request uri: 'https://site.url/file.jpeg?size=medium'. Cached Key: '553a8ec479be'

Upd: Also, my app use signalr and shows images for many clients at same time. So maybe it's cache key lock problem?

[JimBobSquarePants]

I'm afraid I've never used nginx so cannot be of any help. The library doesn't have any cache locking and would throw IO exceptions if there were issues retrieving files from the cache.

[hey-red]

Seems like it fixed #160

[JimBobSquarePants]

Awesome!