Does IronWebScraper have a feature for auto-throttling?

IronWebScraper is a C# library for web scraping that provides a high level of control over the web scraping process, including features like multi-threading, rate limiting, and proxy server rotation. However, as of my last update in early 2023, IronWebScraper does not have a built-in auto-throttling feature that dynamically adjusts the scraping speed based on the server's response or load.

Auto-throttling is a mechanism that automatically regulates the rate of requests to a website based on server response times or error rates, to minimize the risk of overloading the server or getting blocked. While IronWebScraper allows you to set up rate limits and specify the number of concurrent threads, doing this automatically would require additional implementation.

You would have to implement your own logic to adjust the scraping speed. This could be achieved by monitoring server response times and error rates, then adapting the scraping parameters accordingly.

Here's a rough example of how you might implement a simple form of auto-throttling using C# and IronWebScraper:

using IronWebScraper;
using System.Threading;

public class AutoThrottlingScraper : WebScraper
{
    public int RequestDelay { get; set; } = 500; // Initial delay in milliseconds
    public int ErrorThreshold { get; set; } = 5;
    private int errorCount = 0;

    public override void Init()
    {
        this.LoggingLevel = WebScraper.LogLevel.All;
        this.Request("https://example.com", Parse);
    }

    public override void Parse(Response response)
    {
        if (response.HttpStatusCode == System.Net.HttpStatusCode.OK)
        {
            // Reset error count on successful response
            errorCount = 0;
        }
        else
        {
            errorCount++;
            if (errorCount >= ErrorThreshold)
            {
                // Increase delay after certain number of consecutive errors
                RequestDelay += 1000;
                errorCount = 0;
            }
        }

        // Implement the parsing logic here...

        // Schedule next request with the dynamic delay
        Thread.Sleep(RequestDelay);
        this.Request(response.AbsoluteUrl, Parse);
    }
}

class Program
{
    static void Main(string[] args)
    {
        var scraper = new AutoThrottlingScraper();
        scraper.Start();
    }
}

In this example, the AutoThrottlingScraper class extends WebScraper and implements a simple auto-throttling mechanism. The scraper starts with a default request delay and increases it if a threshold number of consecutive errors occur. Once a successful response is received, the error count is reset.

Please note, this is a very basic example and may not be suitable for all scraping scenarios. Auto-throttling in a production environment would likely need to be more sophisticated, taking into account more metrics and potentially adjusting both the delay and the concurrency level to optimize the scraping process while respecting the target server's capacity.