Singleton2

code.cs

using System;
using System.Collections.Generic;
namespace DoFactory.GangOfFour.Singleton.NETOptimized
{
  class MainApp
  {
    static void Main()
    {
      
    }
  }
 sealed class LoadBalancer
 {
  // Static members are 'eagerly initialized', that is, 
  // immediately when class is loaded for the first time.
  // .NET guarantees thread safety for static initialization
  private static readonly LoadBalancer _instance =
    new LoadBalancer();
  // Type-safe generic list of servers
  private List<Server> _servers;
  private Random _random = new Random();
  // Note: constructor is 'private'
  private LoadBalancer()
  {
    
  }
  
  public static LoadBalancer GetLoadBalancer()
  {
    return _instance;
  }
  // Simple, but effective load balancer
  public Server NextServer
  {
    
  }
}
/// <summary>
/// Represents a server machine
/// </summary>
class Server
{
  // Gets or sets server name
  public string Name { get; set; }
  // Gets or sets server IP address
  public string IP { get; set; }
  private static Server _instance;
  private Server()
	{
	}
	public static Server Instance
	{
		get
		{
			return new Server();
		}
	}
}
}