public async Task InvokeAsync(HttpContext context, RequestDelegate next)
{
if (counter.TryIncrement())
{
await next.Invoke(context);
counter.Decrement();
}
else
{
context.Response.StatusCode = 503;
await context.Response.CompleteAsync();
}
}
public static IDisposable TemporaryIncrement(this IParallelRequestsCounter counter)
{
counter.TryIncrement();
return(new ActionDisposable(counter.Decrement));
}
