Program.cs

using System;
using System.Net;
using System.Threading.Tasks;

namespace ConsoleApplication2
{
    class Program
    {
        const string Id = "MyDummyEntry122";
        const string Doc = "{\"_id\":\"" + Id + "\", \"title\":\"test\"}";
        const string DatabaseUri = "http://localhost:5984/viz_data_hub_1_1_0/";
        const string DocUri = DatabaseUri + Id;

        static void Main()
        {
            while (true)
            {
                var rev = Get();
                Delete(rev, true);
                AsyncPut();
            }
        }

        static string Send(string uri, string method = "GET", string body = "", bool async = false)
        {
            var task = Task.Factory.StartNew(() =>
            {
                var client = new WebClient();
                try
                {
                    Console.WriteLine(DateTime.Now.ToString("O") + ": " + method + " " + uri);
                    string response;
                    if (method == "GET")
                    {
                        response = client.DownloadString(uri + "?deleted_conflicts=true");
                        if(response.Contains("_deleted_conflicts")) {
                          Console.WriteLine(DateTime.Now.ToString("O") + ": " + response);
                          Console.WriteLine(DateTime.Now.ToString("O") + ": " + method + " " + uri + ": got _deleted_conflicts, exiting");
                          System.Environment.Exit(0);
                        }
                    } else
                    {
                        client.Headers["Content-Type"] = "application/json";
                        response = client.UploadString(uri, method, body);
                    }
                    Console.WriteLine(DateTime.Now.ToString("O") + ": " + response);
                    return client.ResponseHeaders["ETag"].Replace("\"", "");
                }
                catch (Exception exception)
                {
                    Console.WriteLine(DateTime.Now.ToString("O") + ": " + exception.Message);
                    return null;
                }
            });
            return async ? null : task.Result;
        }

        static string Get(bool async = false)
        {
            return Send(DocUri, "GET", "", async);
        }

        static string AsyncGet()
        {
            return Send(DocUri, "GET", "", true);
        }

        static string Post(bool async = false)
        {
            return Send(DatabaseUri, "POST", Doc, async);
        }

        static string AsyncPost()
        {
            return Send(DatabaseUri, "POST", Doc, true);
        }

        static string Put(string rev = "", bool async = false)
        {
            var uri = DocUri;
            if (!string.IsNullOrEmpty(rev))
                uri += "?rev=" + rev;
            return Send(uri, "PUT", Doc, async);
        }

        static string AsyncPut()
        {
            return Send(DocUri, "PUT", Doc, true);
        }

        static string Delete(string rev = "", bool async = false)
        {
            var uri = DocUri;
            if (!string.IsNullOrEmpty(rev))
                uri += "?rev=" + rev;
            return Send(uri, "DELETE", "", async);
        }

        static string AsyncDelete()
        {
            return Send(DocUri, "DELETE", "", true);
        }

        void PutAndDelete()
        {
            var client = new WebClient();
            try
            {
                string response;
                try
                {
                    Console.WriteLine(DateTime.Now.ToString("O") + ": creating...");
                    response = client.UploadString("http://localhost:5984/viz_data_hub_1_1_0/" + Id, "PUT", "{\"title\":\"test\"}");
                    Console.WriteLine(DateTime.Now.ToString("O") + ": " + response);
                }
                catch (Exception exception)
                {
                    Console.WriteLine(DateTime.Now.ToString("O") + ": " + exception.Message);
                    Console.WriteLine(DateTime.Now.ToString("O") + ": retrieving...");
                    client.DownloadString("http://localhost:5984/viz_data_hub_1_1_0/" + Id);
                    Console.WriteLine(DateTime.Now.ToString("O") + ": received");
                }
                var rev = client.ResponseHeaders["ETag"].Replace("\"", "");
                var uri = "http://localhost:5984/viz_data_hub_1_1_0/" + Id + "?rev=" + rev;
                Console.WriteLine(DateTime.Now.ToString("O") + ": deleting...");
                response = client.UploadString(uri, "DELETE", "");
                Console.WriteLine(DateTime.Now.ToString("O") + ": " + response);
            }
            catch (Exception exception)
            {
                Console.WriteLine(DateTime.Now.ToString("O") + ": " + exception.Message);
            }
        }
    }
}