memcached 案例

在ASP.NET MVC中应用分布式缓存它是最简单的方式,那么要使用Memcached ,我们就进行配置一番:
打开Web.config 文件,添加如下配置节点

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<section name="cacheProvider"  
type="MemcachedProviders.Cache.CacheProviderSection, MemcachedProviders"  
allowDefinition="MachineToApplication" restartOnExternalChanges="true"/>  
<sectiongroup name="enyim.com">  
<section name="memcached"  
type="Enyim.Caching.Configuration.MemcachedClientSection, Enyim.Caching" />  
</sectiongroup>  
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>  

 添加如下节点指向Memcached服务器

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<enyim .com>  
<memcached>  
<servers>  
<!-- 你的服务器-->  
<add address="127.0.0.1" port="11211" />  
</servers>  
<socketpool minPoolSize="10" maxPoolSize="100"  
connectionTimeout="00:00:10" deadTimeout="00:02:00" />  
</memcached>  
</enyim>  

接着配置缓存驱动器

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<cacheprovider   
defaultProvider="MemcachedCacheProvider">  
<providers>  
<add name="MemcachedCacheProvider"type="MemcachedProviders.Cache.MemcachedCacheProvider, MemcachedProviders"keySuffix="_MySuffix_" defaultExpireTime="2000"/>  
</providers>  
 
</cacheprovider>  
   继续配置log4j
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<log4net>  
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">  
<layout type="log4net.Layout.PatternLayout"><conversionpattern value="%date [%thread] %-5level %logger [%property{NDC}]- %message%newline" />  
</layout></appender><root><priority value="WARN"/><appender -ref ref="ConsoleAppender">  
<filter type="log4net.Filter.LevelRangeFilter">  
<levelmin value="WARN"/><levelmax value="FATAL"/>  
</filter>  
</appender>  
</root>  
 
</log4net>  
假如你引用了所有相关的类库,下面是我的category 控制器,如果Memcached内存中不包含returnObj对象,那么我们将缓存它
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public ActionResult Category()    
{              
   var returnObj = DistCache.Get<list <CategoryObject>>("fullCatListObject");     
   if (returnObj == null)              
   {                 
     P015.Modules.Categories.Categories _cat = new P015.Modules.Categories.Categories();   
     returnObj = _cat.getCatObject();   
     DistCache.Add("fullCatListObject", returnObj, new TimeSpan(29, 0, 0, 0));   
    }              
   return View(returnObj);  
   }  
   值得注意的是我们的对象应该序列化例如:
 

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[Serializable]   
 public class CategoryObject  
 {       
  public string CAT_NAME { get; set; }   
  public int CAT_ID { get; set; }  
  public int LEVEL { get; set; }      
  }