.Net Remoting的效能研究学习：数据压缩方法

.Net Remoting的效能研究学习：数据压缩方法

学习.Net Remoting已有一段时间，对于其初步部署应该倒不是很难，真正应用到系统中则需要考虑的问题逐渐多了起来，.Net Remoting机制其特点可以穿透防火墙，在局域网内速度很快，实现证明是比Web Service快很多，但在广域网测试的时候.Net Remoting（使用TCP）效能明显不如Web Service运行效能，后来通过更改.Net Remoting协议改为HEEP+SOAP方式进行，效能有所改善，网络上很多资料显示Web Service效能明显比.Net Remoting效能快，但个人觉得实用为第一，不必要追求所谓真正的快速，因为没有绝对的快速！
选择机制要考虑到使用范围，开发环境还有网络配置等等因素，选择适合的才是最重要的！

在这次.Net Remoting效能改善最大的感受是，尽量少进入通道，尽量一次性读取必要讯息，重复使用离线数据源，并且使用了数据压缩技术，根据网络上的资料修改所得，与大家分享！
使用之前需要下载组件： ICSharpCode.SharpZipLib 类库可以从这里下载。


public class ZipHelper






{


public static byte[] Zip(byte[] data)






{


return Zip(data, 0, data.Length);


}






public static byte[] Unzip(byte[] data)






{


return Unzip(data, 0, data.Length);


}




public static byte[] Zip(byte[] data, int offset, int size)






{


MemoryStream inStream = new MemoryStream(data, offset, size);


MemoryStream outStream = new MemoryStream();


BZip2.Compress(inStream, outStream, size);




byte[] result = outStream.ToArray();


inStream.Close();


outStream.Close();




return result;


}




public static byte[] Unzip(byte[] data, int offset, int size)






{


MemoryStream inStream = new MemoryStream(data, offset, size);


MemoryStream outStream = new MemoryStream();


BZip2.Decompress(inStream, outStream);


byte[] result = outStream.ToArray();


inStream.Close();


outStream.Close();


return result;


}






/**//**//**//// <summary>


/// 序列化


/// </summary>


/// <param name="data">要序列化的物件</param>


/// <returns>返回存放序列化後的資料緩衝區</returns>


public static byte[] Serialize(object aodata)






{


BinaryFormatter formatter = new BinaryFormatter();


MemoryStream rems = new MemoryStream();


formatter.Serialize(rems, aodata);


return rems.GetBuffer();


}






/**//**//**//// <summary>


/// 反序列化


/// </summary>


/// <param name="data">數據緩衝區</param>


/// <returns>對象</returns>


public static object Deserialize(byte[] abdata)






{


BinaryFormatter formatter = new BinaryFormatter();


MemoryStream rems = new MemoryStream(abdata);


abdata = null;


return formatter.Deserialize(rems);


}




public static Dictionary<string, DataTable> UnZipDictionary(byte[] abDictionary)






{


Dictionary<string, DataTable> dictonary = new Dictionary<string, DataTable>();


byte[] bdictionary = Unzip(abDictionary);


dictonary = (Dictionary<string, DataTable>)Deserialize(bdictionary);


return dictonary;


}




public static byte[] ZipDictionary(Dictionary<string, DataTable> adDictionary)






{


byte[] bdictionary = Serialize(adDictionary);


byte[] dictionary = Zip(bdictionary);


return dictionary;


}




public static DataTable UnZipDataTable(byte[] abDictionary)






{


DataTable dictonary = new DataTable();


byte[] bdictionary = Unzip(abDictionary);


dictonary = (DataTable)Deserialize(bdictionary);


return dictonary;


}




public static byte[] ZipDataTable(DataTable adDictionary)






{


byte[] bdictionary = Serialize(adDictionary);


byte[] dictionary = Zip(bdictionary);


return dictionary;


}




public static Object UnZipObject(byte[] aoObject)






{


Object mObject = new Object();


byte[] bdictionary = Unzip(aoObject);


mObject = (Object)Deserialize(bdictionary);


return mObject;


}




public static byte[] ZipObject(Object aoObject)






{


byte[] bdictionary = Serialize(aoObject);


byte[] dictionary = Zip(bdictionary);


return dictionary;


}