c# - 本地使用 azure 缓存时出现 InvalidOperationException

Question

尝试在本地创建 azure 缓存实例时出现 InvalidOperationException(异常和代码如下所示)。该代码正在从控制台应用程序运行。当我在 azure 模拟器中以辅助角色运行它时，它工作得很好。

是否可以使用 azure 缓存而不在模拟器中运行它？

{System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.InvalidOperationException: role discovery data is unavailable
at Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.get_Roles()

配置

  <dataCacheClients>
    <dataCacheClient name="mycache.cache.windows.net">
      <autoDiscover
        isEnabled="true"
        identifier="mycache.cache.windows.net" />
      <securityProperties mode="Message" sslEnabled="false">
        <messageSecurity authorizationInfo="[mytoken]=" />
      </securityProperties>
    </dataCacheClient>
  </dataCacheClients>

代码:

        bool autoDiscover = true;
        string identifier = "foo";

        var cacheFactoryConfiguration = new DataCacheFactoryConfiguration
        {               
            AutoDiscoverProperty = new DataCacheAutoDiscoverProperty(autoDiscover, identifier),
            TransportProperties = new DataCacheTransportProperties { MaxBufferSize = int.MaxValue },
            IsCompressionEnabled = true,
            MaxConnectionsToServer = 3
        };

        var dataCacheFactory = new DataCacheFactory(cacheFactoryConfiguration);

Answer 1

可以，但不能使用自动发现功能。自动发现是角色内缓存的一项功能，需要 Azure RoleEnvironment(因此您会收到错误)。

// Cache client configured by settings in application configuration file.
DataCacheFactoryConfiguration config = new DataCacheFactoryConfiguration("mycache.cache.windows.net");
DataCacheFactory cacheFactory = new DataCacheFactory(config);
DataCache defaultCache = cacheFactory.GetDefaultCache();    

// Put and retrieve a test object from the default cache.
defaultCache.Put("testkey", "testobject");
string strObject = (string)defaultCache.Get("testkey");

另外注意 - 我不会在 Azure 共享缓存上进行任何开发 - 该服务将于 2014 年停用 - 请参阅 http://www.windowsazure.com/en-us/pricing/details/cache/