public class PostgreSaver : IDbSaver
    {
        public PostgreSaver()
        {
            npgsqlConnection = new NpgsqlConnection();
            NpgsqlConnectionStringBuilder builder = new NpgsqlConnectionStringBuilder();
            builder.Host = "10.10.1.11";
            builder.Port = 5432;
            builder.UserName = "postgres";
            builder.Password = "123";
            npgsqlConnection.ConnectionString = builder.ConnectionString;
            npgsqlConnection.Open();
        }

        public void Save(WebLog webLog)
        {
            NpgsqlCommand command = new NpgsqlCommand();
            command.CommandText = "insert into ping(ping_id, name, url, ip) values(nextval('seq_ping'), @name, @url, @ip)";
            command.Parameters.Add(new NpgsqlParameter("name", webLog.Name));
            command.Parameters.Add(new NpgsqlParameter("url", webLog.Url));
            command.Parameters.Add(new NpgsqlParameter("ip", webLog.Ip));
            command.Connection = npgsqlConnection;
            command.ExecuteNonQuery();
        }

        private NpgsqlConnection npgsqlConnection;
    }