项目经验之:分布式缓存HttpRuntime.cache应用到单点登陆中_优化登陆

 

 

 

以前的设计方案，是我们在数据库中放一个表，用作存储验证登陆成功的用户，并且生成用

户TOKEN（令牌）

 

 

分布式缓存+集群的解决方案图:

 

 

大概就是这样设计的。。。四台服务器。

我们将存储登陆成功的用户表从数据库中分离出来，放到缓存中。并利用集群建立四台服务器缓存同步更新。。。。

 

在登陆时，我们读了缓存中的Token，同时遍历IP集群中配置的服务器地址。同步四台服务器之间的Token缓存。。。。。

 

相应的代码:

DE层中配置文件:

 

Code
<configuration>
    <appSettings>
        <!--集群相关开始-->
        <!--集群IP组-->
        <add key="ClusterGroupAddr" value="192.168.1.165,10.132.41.52" />
        <!--当前的Web站点名称-->
        <add key="WebSiteName" value="HttpRuntimeCacheService" />
        <!-- 集群相关截止 -->
    </appSettings>
 <system.serviceModel>
  <bindings>
   <basicHttpBinding>
    <binding name="CacheServiceSoap" closeTimeout="00:01:00" openTimeout="00:01:00"
     receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false"
     bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
     maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
     messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
     useDefaultWebProxy="true">
     <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
      maxBytesPerRead="4096" maxNameTableCharCount="16384" />
     <security mode="None">
      <transport clientCredentialType="None" proxyCredentialType="None"
       realm="" />
      <message clientCredentialType="UserName" algorithmSuite="Default" />
     </security>
    </binding>
   </basicHttpBinding>
  </bindings>
  <client>
   <endpoint address="http://localhost/HttpRuntimeCacheService/CacheService.asmx"
    binding="basicHttpBinding" bindingConfiguration="CacheServiceSoap"
    contract="CacheService.CacheServiceSoap" name="CacheServiceSoap" />
  </client>
 </system.serviceModel>
</configuration>

 

 CacheBase.cs  缓存基类

 

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;
using  System.Runtime.Serialization.Formatters.Binary;
using  System.Security;
using  System.Web.Caching;
using  System.Web;
using  System.ServiceModel;   
using  System.Reflection;
using  HttpRuntimeCacheDE.CacheService;

namespace  HttpRuntimeCacheDE.Cache
{
     public   class  CacheBase
    {
         private  CacheServiceSoapClient client  =   null ;
         private  CacheService.LoginStatusParam cParam  =   new  CacheService.LoginStatusParam();
         private  CacheService.CacheOperation cOperation  =   new  CacheService.CacheOperation();
         ///   <summary>
         ///  发送用于同步集群中的Cache数据
         ///   </summary>
         ///   <param name="param"> Cache数据 </param>
         public   void  SendCacheData(CacheParam param, CacheOperation operation)
        {

             string [] ips  =  CacheConfig.ClusterGroupAddr;
             foreach  ( string  ip  in  ips)
            {
                 try
                {
                    client  =   new  CacheService.CacheServiceSoapClient();
                    EndpointAddress address  =   new  EndpointAddress( " http:// "   +  ip  +   @" / "   +  CacheConfig.WebSiteName  +   " /CacheService.asmx " );

                    client.Endpoint.Address  =  address;

                    RemoteParamConvert(cParam, param);

                     switch  (operation)
                    {
                         case  CacheOperation.Add:
                            cOperation  =  CacheService.CacheOperation.Add;
                             break ;
                         case  CacheOperation.Edit:
                            cOperation  =  CacheService.CacheOperation.Edit;
                             break ;
                         case  CacheOperation.Delete:
                            cOperation  =  CacheService.CacheOperation.Delete;
                             break ;
                         default :
                             break ;
                    }

                    client.GetCacheData(cParam, cOperation);
                }
                 catch
                {
                     continue ;
                }
            }

        }
         ///   <summary>
         ///  用于同步集群中的Cache数据
         ///   </summary>
         ///   <param name="param"> Cache数据 </param>
         ///   <param name="operation"> Cache操作类型 </param>
         public   void  SyncCacheData(CacheParam param, CacheOperation operation)
        {
             switch  (operation)
            {
                 case  CacheOperation.Add:
                    AddCache(param);
                     break ;
                 case  CacheOperation.Edit:
                    EditCache(param);
                     break ;
                 case  CacheOperation.Delete:
                    DeleteCache(param);
                     break ;
                 default :
                     break ;
            }
        }
         //  增加Cache数据
         protected   virtual   void  AddCache(CacheParam param)
        {
             string  key  =  BuildCacheKey(param);
            HttpRuntime.Cache.Add(key, param,  null , DateTime.Now.AddHours( 1 ), System.Web.Caching.Cache.NoSlidingExpiration, CacheItemPriority.High,  null );
        }
         //  修改Cache数据
         protected   virtual   void  EditCache(CacheParam param)
        {
             string  key  =  BuildCacheKey(param);
            HttpRuntime.Cache.Remove(key);
            AddCache(param);
        }

         //  删除Cache数据
         protected   virtual   void  DeleteCache(CacheParam param)
        {
             string  key  =  BuildCacheKey(param);
            HttpRuntime.Cache.Remove(key);
        }

         //  生成在线的Cache Key
         protected   virtual   string  BuildCacheKey(CacheParam param)
        {
             return   "" ;
        }
         //  将本地参数转换成远程调用的参数
         private   void  RemoteParamConvert( object  sourceObj,  object  targetObj)
        {
             try
            {
                PropertyInfo[] sourceInfo  =  sourceObj.GetType().GetProperties();
                PropertyInfo[] targetInfo  =  targetObj.GetType().GetProperties();

                 for  ( int  i  =   0 ; i  <  sourceInfo.Length; i ++ )
                {
                     if  (sourceInfo[i].Name  ==  targetInfo[i].Name)
                    {
                         object  targetValue  =  targetInfo[i].GetValue(targetObj,  null );


                         if  ( ! ParamFunc.Judgement(targetValue))
                             continue ;

                        sourceInfo[i].SetValue(sourceObj, targetValue,  null );
                    }
                }
            }
             catch  (Exception ex)
            {
                 throw  ex;
            }
        }
       
    }

     ///   <summary>
     ///  Cache同步操作类型
     ///   </summary>
     public   enum  CacheOperation
    {
        Add,
        Edit,
        Delete
    }
}

 

  CacheFunc.cs 缓存操作函数

Code
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Caching;


namespace HttpRuntimeCacheDE.Cache
{
    public class CacheFunc:CacheBase
    {
        protected override string BuildCacheKey(CacheParam param)
        {
            LoginStatusParam lsparam = param as LoginStatusParam;
            return param.GetType().Name.ToString() + "&" + lsparam.SysLoginStatusID + "&" + lsparam.LoginName;
        }
        /// <summary>
        /// 在Cache中查询在线用户
        /// </summary>
        /// <param name="param">在线用户参数</param>
        public List<LoginStatusParam> QueryLoginStatus(LoginStatusParam param)
        {
            List<LoginStatusParam> result = new List<LoginStatusParam>();

            List<LoginStatusParam> plist = ConvertCacheItem();

            var loginResult = from c in plist
                              where 1 == 1
                              && (!Judgement(param.SysLoginStatusID) ? true : c.SysLoginStatusID == param.SysLoginStatusID)
                              && (!Judgement(param.SysOrganizationID) ? true : c.SysOrganizationID == param.SysOrganizationID)
                              && (!Judgement(param.SysServiceCenterID) ? true : c.SysServiceCenterID == param.SysServiceCenterID)
                              && (!Judgement(param.LoginName) ? true : c.LoginName == param.LoginName)
                              && (!Judgement(param.LoginTime) ? true : c.LoginTime == param.LoginTime)
                              && (!Judgement(param.LastHandleTime) ? true : c.LastHandleTime == param.LastHandleTime)
                              && (!Judgement(param.FullName) ? true : c.FullName == param.FullName)
                              && (!Judgement(param.LoginToken) ? true : c.LoginToken == param.LoginToken)
                              select c;

            result = loginResult.ToList<LoginStatusParam>();

            return result;
        }

        // 将Cache中的项转换成List
        private List<LoginStatusParam> ConvertCacheItem()
        {
            List<LoginStatusParam> plist = new List<LoginStatusParam>();

            IDictionaryEnumerator CacheEnum = HttpRuntime.Cache.GetEnumerator();

            while (CacheEnum.MoveNext())
            {
                if (CacheEnum.Value is LoginStatusParam)
                    plist.Add(CacheEnum.Value as LoginStatusParam);
            }

            return plist;
        }
        public string SysUserLogin(LoginStatusParam param)
        {
            AddLoginStatus(param);
            param = QueryLoginStatus(param).First();

            return param.LoginToken;
        }

        #region AddMethod
        /// <summary>
        /// 在Cache中增加在线用户
        /// </summary>
        /// <param name="param">在线用户参数</param>
        public void AddLoginStatus(LoginStatusParam param)
        {
            Random random = new Random();
            param.SysLoginStatusID = random.Next().ToString();
            SyncCacheData(param, CacheOperation.Add);

            SendCacheData(param, CacheOperation.Add);
        }
        #endregion
        private bool Judgement(object obj)
        {
            try
            {
                if (obj != null && obj != DBNull.Value)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }
}