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ASP.NET頁面緩存常見的4種方式

 更新時間：2016年11月17日 14:00:00   作者：天風(fēng)隼  
這篇文章主要為大家詳細介紹了ASP.NET頁面緩存常見的4種方式,具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文為大家分享了4種常見的ASP.NET頁面緩存方式，供大家參考，具體內(nèi)容如下

1、分布式緩存Memcached，教程下載

2、內(nèi)存緩存，此占用服務(wù)器資源

#region 內(nèi)存緩存 
 public class MemoryCache 
 { 
 #region 寫 
 /// <summary> 
 /// 向內(nèi)存寫入數(shù)據(jù)緩存 
 /// </summary> 
 /// <remarks>TOMMYHU2011-7-28 10:25創(chuàng)建</remarks> 
 /// <param name="cachekey">緩存標(biāo)識關(guān)鍵字</param> 
 /// <param name="cacheresult">需要存放的數(shù)據(jù)</param> 
 /// <param name="cachetime">單位秒</param> 
 public static void InertMemoryCache(string cachekey, object cacheresult, int cachetime) 
 { 
 if (cacheresult != null) 
 { 
  System.Web.HttpRuntime.Cache.Insert(cachekey, cacheresult, null 
  , System.Web.Caching.Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(cachetime)); 
 } 
 } 
 #endregion 
 #region 讀 
 /// <summary> 
 /// 根據(jù)緩存標(biāo)識讀取內(nèi)存緩存信息 
 /// </summary> 
 /// <remarks>TOMMYHU2011-7-28 10:25創(chuàng)建</remarks> 
 /// <param name="cachekey">緩存標(biāo)識關(guān)鍵字</param> 
 /// <returns>內(nèi)存緩存數(shù)據(jù)</returns> 
 public static object ReadMemoryCache(string cachekey) 
 { 
 object obj = System.Web.HttpRuntime.Cache.Get(cachekey); 
 if (obj != null) 
 { 
  return obj; 
 } 
 return null; 
 } 
 #endregion 
 } 
 #endregion

3、XML緩存，這種最為常見

 #region xml緩存 
 public static class XmlCache 
 { 
 private static string m_CacheFolderName = null; 
 
 #region 獲取/生成緩存文件方法(無cmdParams) 
 /// <summary> 
 /// 獲取/生成緩存文件方法(DataTable) 
 /// </summary> 
 /// <param name="SQL">用于將Sql轉(zhuǎn)化為MD5字符串</param> 
 /// <param name="CacheFilePath">存放Xml文件的相對路徑(根目錄已預(yù)置)</param> 
 /// <param name="CacheTime">緩存時間</param> 
 /// <param name="DataUsed">使用的數(shù)據(jù)庫的鏈接字符串</param> 
 /// <returns></returns> 
 public static DataTable CacheFileByDataTable(string SQL, string CacheFilePath, int CacheTime) 
 { 
 SQLHelper.SQLHelper QuerySql = new SQLHelper.SQLHelper(); 
 if (CacheFilePath != string.Empty && CacheFilePath.StartsWith("/")) 
 { 
  CacheFilePath = CacheFilePath.Remove(0, 1); 
 } 
 
 string SqlMd5 = SQL;//用于將Sql轉(zhuǎn)化為MD5字符串 
 
 string StrSqlByMd5 = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(SqlMd5, "MD5");//生成的Md5文件名 
 
 string MyCacheFilePath = ""; 
 
 if (CacheTime >= 10000)//如果大于20天的話系統(tǒng)默認為持久 
 { 
  MyCacheFilePath = XmlCache.CacheFolderNameP + CacheFilePath;//用于存放Xml文件的相對路徑 
 } 
 else 
 { 
  MyCacheFilePath = XmlCache.CacheFolderName + CacheFilePath;//用于存放Xml文件的相對路徑 
 } 
 
 
 int MyCacheTime = CacheTime;//緩存時間(分) 
 
 DataTable dt = new DataTable();//存放數(shù)據(jù)記錄的DataTable 
 
 DataTable CacheDt = new DataTable();//獲取緩存數(shù)據(jù)記錄的DataTable 
 
 
 //嘗試獲取緩存數(shù)據(jù)記錄 
 try 
 { 
  CacheDt = DataTableCache.GetDTCache(MyCacheTime, MyCacheFilePath, StrSqlByMd5); 
 } 
 catch 
 { 
  CacheDt = null; 
 } 
 if (CacheDt != null)//獲取到緩存的XML文件 
 { 
  dt = CacheDt; 
 } 
 else//未獲取到緩存的XML文件 
 { 
  //生成DataTable(如果用Query查詢請用Query.ProcessSql方法) 
  //dt = Query.ProcessSql(SqlMd5, DataUsed); 
  dt = QuerySql.retDT(SQL); 
 
  //將DataTable存為XML文件 
  try 
  { 
  if (dt.DataSet != null) 
  { 
  dt.DataSet.Tables.Remove(dt); 
  } 
 
  DataTableCache.SetDTCache(MyCacheFilePath, StrSqlByMd5, dt); 
  } 
  catch (Exception ex) 
  { 
  //Log.GetComLogger().Error("將DataTable存為XML文件出錯：" + ex.Message); 
  } 
 } 
 return dt; 
 } 
 
 /// <summary> 
 /// 獲取/生成緩存文件方法(DataSet) Add By WJ 08-10-23 
 /// </summary> 
 /// <param name="SQL">用于將Sql轉(zhuǎn)化為MD5字符串</param> 
 /// <param name="CacheFilePath">存放Xml文件的相對路徑(根目錄已預(yù)置)</param> 
 /// <param name="CacheTime">緩存時間</param> 
 /// <param name="DBName">使用的數(shù)據(jù)庫的鏈接字符串</param> 
 /// <returns></returns> 
 public static DataSet CacheFileByDataSet(string SQL, string CacheFilePath, int CacheTime) 
 { 
 SQLHelper.SQLHelper QuerySql = new SQLHelper.SQLHelper(); 
 if (CacheFilePath != string.Empty && CacheFilePath.StartsWith("/")) 
 { 
  CacheFilePath = CacheFilePath.Remove(0, 1); 
 } 
 
 string SqlMd5 = SQL;//用于將Sql轉(zhuǎn)化為MD5字符串 
 
 string StrSqlByMd5 = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(SqlMd5, "MD5");//生成的Md5文件名 
 
 string MyCacheFilePath = XmlCache.CacheFolderName + CacheFilePath;//用于存放Xml文件的相對路徑 
 
 int MyCacheTime = CacheTime;//緩存時間(分) 
 
 DataSet ds = new DataSet();//存放數(shù)據(jù)記錄的DataSet 
 
 DataSet CacheDs = new DataSet();//獲取緩存數(shù)據(jù)記錄的DataSet 
 
 //嘗試獲取緩存數(shù)據(jù)記錄 
 try 
 { 
  CacheDs = DataTableCache.GetDSCache(MyCacheTime, MyCacheFilePath, StrSqlByMd5); 
 } 
 catch 
 { 
  CacheDs = null; 
 } 
 if (CacheDs != null)//獲取到緩存的XML文件 
 { 
  ds = CacheDs; 
 } 
 else//未獲取到緩存的XML文件 
 { 
  //生成DataSet 
  //ds = Query.ProcessMultiSql(SqlMd5, DBName); 
  ds = QuerySql.retDS(SQL); 
 
  //將DataSet存為XML文件 
  try 
  { 
  DataTableCache.SetDSCache(MyCacheFilePath, StrSqlByMd5, ds); 
  } 
  catch 
  { } 
 } 
 return ds; 
 } 
 
 #endregion 
 
 #region 獲取/生成緩存文件方法(有cmdParams) 
 /// <summary> 
 /// 獲取/生成緩存文件方法(DataTable) 
 /// </summary> 
 /// <param name="SQL">用于將Sql轉(zhuǎn)化為MD5字符串</param> 
 /// <param name="CacheFilePath">存放Xml文件的相對路徑(根目錄已預(yù)置)</param> 
 /// <param name="CacheTime">緩存時間</param> 
 /// <param name="DataUsed">使用的數(shù)據(jù)庫的鏈接字符串</param> 
 /// <param name="cmdParams">以數(shù)組形式提供SqlCommand命令中用到的參數(shù)列表</param> 
 /// <returns></returns> 
 public static DataTable CacheFileByDataTable(string SQL, string CacheFilePath, int CacheTime, string DBConstr, params SqlParameter[] cmdParams) 
 { 
 SQLHelper.SQLHelper QuerySql = new SQLHelper.SQLHelper(); 
 if (CacheFilePath != string.Empty && CacheFilePath.StartsWith("/")) 
 { 
  CacheFilePath = CacheFilePath.Remove(0, 1); 
 } 
 
 string SqlMd5 = SQL;//用于將Sql轉(zhuǎn)化為MD5字符串 
 
 string sqlmd5params = SQL; 
 if (cmdParams != null) 
 { 
  for (int i = 0; i < cmdParams.Length; i++) 
  { 
  if (cmdParams[i].Value != null) 
  sqlmd5params += cmdParams[i].Value.ToString(); 
  } 
 } 
 
 string StrSqlByMd5 = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sqlmd5params, "MD5");//生成的Md5文件名 
 
 string MyCacheFilePath = ""; 
 
 if (CacheTime >= 10000)//如果大于20天的話系統(tǒng)默認為持久 
 { 
  MyCacheFilePath = XmlCache.CacheFolderNameP + CacheFilePath;//用于存放Xml文件的相對路徑 
 } 
 else 
 { 
  MyCacheFilePath = XmlCache.CacheFolderName + CacheFilePath;//用于存放Xml文件的相對路徑 
 } 
 
 int MyCacheTime = CacheTime;//緩存時間(分) 
 
 DataTable dt = new DataTable();//存放數(shù)據(jù)記錄的DataTable 
 
 DataTable CacheDt = new DataTable();//獲取緩存數(shù)據(jù)記錄的DataTable 
 
 
 //嘗試獲取緩存數(shù)據(jù)記錄 
 CacheDt = DataTableCache.GetDTCache(MyCacheTime, MyCacheFilePath, StrSqlByMd5); 
 
 if (CacheDt != null)//獲取到緩存的XML文件 
 { 
  dt = CacheDt; 
 } 
 else//未獲取到緩存的XML文件 
 { 
  //生成DataTable(如果用Query查詢請用Query.ProcessSql方法) 
  //dt = Query.ProcessSql(SqlMd5, DataUsed); 
  dt = QuerySql.retDT(SqlMd5); 
  DataTable dt1 = new DataTable(); 
  if (dt != null) 
  { 
  dt1 = dt.Copy(); 
  } 
  //將DataTable存為XML文件 
  DataTableCache.SetDTCache(MyCacheFilePath, StrSqlByMd5, dt1); 
 } 
 return dt; 
 } 
 
 
 /// <summary> 
 /// 獲取/生成緩存文件方法(DataSet) Add By wjf 
 /// </summary> 
 /// <param name="SQL">用于將Sql轉(zhuǎn)化為MD5字符串</param> 
 /// <param name="CacheFilePath">存放Xml文件的相對路徑(根目錄已預(yù)置)</param> 
 /// <param name="CacheTime">緩存時間</param> 
 /// <param name="DBName">使用的數(shù)據(jù)庫的鏈接字符串</param> 
 /// <param name="cmdParams">以數(shù)組形式提供SqlCommand命令中用到的參數(shù)列表</param> 
 /// <returns></returns> 
 public static DataSet CacheFileByDataSet(string SQL, string CacheFilePath, int CacheTime, string DBConstr, params SqlParameter[] cmdParams) 
 { 
 SQLHelper.SQLHelper QuerySql = new SQLHelper.SQLHelper(); 
 string SqlMd5 = SQL;//用于將Sql轉(zhuǎn)化為MD5字符串 
 
 string sqlmd5params = SQL; 
 if (cmdParams != null) 
 { 
  for (int i = 0; i < cmdParams.Length; i++) 
  { 
  if (cmdParams[i].Value != null) 
  sqlmd5params += cmdParams[i].Value.ToString(); 
  } 
 } 
 
 string StrSqlByMd5 = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sqlmd5params, "MD5");//生成的Md5文件名 
 
 string MyCacheFilePath = XmlCache.CacheFolderName + CacheFilePath;//用于存放Xml文件的相對路徑 
 
 int MyCacheTime = CacheTime;//緩存時間(分) 
 
 DataSet ds = new DataSet();//存放數(shù)據(jù)記錄的DataSet 
 
 DataSet CacheDs = new DataSet();//獲取緩存數(shù)據(jù)記錄的DataSet 
 
 //嘗試獲取緩存數(shù)據(jù)記錄 
 CacheDs = DataTableCache.GetDSCache(MyCacheTime, MyCacheFilePath, StrSqlByMd5); 
 
 if (CacheDs != null)//獲取到緩存的XML文件 
 { 
  ds = CacheDs; 
 } 
 else//未獲取到緩存的XML文件 
 { 
  //生成DataSet 
  //ds = Query.ProcessMultiSql(SqlMd5, DBName); 
  ds = QuerySql.retDS(SqlMd5); 
  DataSet ds1 = new DataSet(); 
  if (ds != null) 
  { 
  ds1 = ds.Copy(); 
  } 
  //將DataSet存為XML文件 
  DataTableCache.SetDSCache(MyCacheFilePath, StrSqlByMd5, ds1); 
 } 
 return ds; 
 } 
 #endregion 
 
 #region 非持久保持 
 /// <summary> 
 /// 非持久保持 
 /// </summary> 
 public static string CacheFolderName 
 { 
 get 
 { 
  if (m_CacheFolderName == null)//如果Global.asax中未定義路徑 
  { 
  m_CacheFolderName = System.Configuration.ConfigurationManager.AppSettings.GetValues("CachePathRoot")[0]; 
  if (m_CacheFolderName == null)//如果Web.Config中未定義路徑 
  { 
  return "/CacheData/" + DateTime.Now.ToString("yyyyMMdd") + "/"; 
  } 
  else 
  { 
  return m_CacheFolderName + DateTime.Now.ToString("yyyyMMdd") + "/"; 
  } 
  } 
  else 
  { 
  return m_CacheFolderName + DateTime.Now.ToString("yyyyMMdd") + "/"; 
  } 
 } 
 
 set 
 { 
  m_CacheFolderName = value; 
 } 
 } 
 #endregion 
 
 #region 持久保存(例如存放MapBar緩存的數(shù)據(jù)或需要3個月以上更新的數(shù)據(jù)等) 
 /// <summary> 
 /// 持久保存(例如存放MapBar緩存的數(shù)據(jù)或需要3個月以上更新的數(shù)據(jù)等) 
 /// </summary> 
 public static string CacheFolderNameP 
 { 
 get 
 { 
  if (m_CacheFolderName == null)//如果Global.asax中未定義路徑 
  { 
  m_CacheFolderName = System.Configuration.ConfigurationManager.AppSettings.GetValues("CachePathRoot")[0]; 
  if (m_CacheFolderName == null)//如果Web.Config中未定義路徑 
  { 
  return "/CacheData/"; 
  } 
  else 
  { 
  return m_CacheFolderName; 
  } 
  } 
  else 
  { 
  return m_CacheFolderName; 
  } 
 } 
 
 set 
 { 
  m_CacheFolderName = value; 
 } 
 } 
 #endregion 
 } 
 #endregion

4、DATATABLE緩存

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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