HttpWebRequest runs slowly first time within SQLCLR

Question

When making an HttpWebRequest within a CLR stored procedure (as per the code below), the first invocation after the Sql Server is (re-)started or after a given (but indeterminat

Answer 1

I have tested and my first cold run (after SQL service restart) was in 3 seconds (not 30 as yours), all others are in 0 sec.

The code sample I've used to build a DLL:

using System;
using System.Data;
using System.Net;
using System.IO;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;

namespace MySQLCLR
{
    public static class WebRequests
    {
        public static void MakeWebRequest(string address, string parameters, int connectTO)
        {
            string returnData;
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(String.Concat(address.ToString(), "?", parameters.ToString()));
            request.Timeout = (int)connectTO;
            request.Method = "GET";
            using (WebResponse response = request.GetResponse())
            {
                using (Stream responseStream = response.GetResponseStream())
                {
                    using (StreamReader reader = new StreamReader(responseStream))
                    {
                        returnData = reader.ReadToEnd();
                        reader.Close();
                    }
                    responseStream.Close();
                }
                response.Close();
            }
            SqlDataRecord rec = new SqlDataRecord(new SqlMetaData[] { new SqlMetaData("response", SqlDbType.NVarChar, 10000000) });
            rec.SetValue(0, returnData);
            SqlContext.Pipe.Send(rec);
        }
    }
}