Flyweight Pattern Gist

ZoneClient.cs

    public class ZoneClient
    {
        static Random rnd = new Random();

        public IEnumerable<ShippingRoute> CreateShippingRoutes(IList<string> usZipCodes)
        {
            var routes = new List<ShippingRoute>();
            var zoneFactory = new ZoneFactory();

            for (var i = 0; i < 2000000; i++)
            {
                var destination = 
                    zoneFactory.GetZone(usZipCodes[rnd.Next(usZipCodes.Count)]);
                
                if(i % 100 == 0) //Issuing a command on the Value Object
                    destination = destination.RegisterCourier("Fedex"); 
                
                routes.Add(new ShippingRoute(destination));
            }
            
            return routes;
        }
    }