Question

我正在尝试使用BLOB存储的本地存储。我经历了http://allcomputers.us/windows_azure/using-local-storage-with-blob-storage-(part-1)---using-a-local-cache---defining-and-accessing-local-storage.aspx 并重新考虑我的GetBlob方法如下。

public Stream GetBlob(string blobAddress, string CONTAINER_NAME)
    {
        MemoryStream stream = null;
        stream = CheckInLocalCache(blobAddress);
        if (stream==null)
        {
            CloudBlobContainer container = Client.GetContainerReference(CONTAINER_NAME);
            if (container != null)
            {
                stream = new MemoryStream();
                container.GetBlobReference(blobAddress).DownloadToStream(stream);
            }
        }

        return stream;
    }

    private static MemoryStream CheckInLocalCache(string blobAddress)
    {
        MemoryStream localBlobStream=null;
        LocalResource localBlobCache = RoleEnvironment.GetLocalResource("localBlobCache");
        if (localBlobCache != null)
        {
            string localCacheRootDirectory = localBlobCache.RootPath;
            string blobName = blobAddress.Split('/')[blobAddress.Split('/').Length - 1];
            if (File.Exists(localBlobCache.RootPath + blobName))
            {
                localBlobStream = new MemoryStream(File.ReadAllBytes(localBlobCache.RootPath + blobName));
            }               
        }
        return localBlobStream;
    }

在Config文件中我添加了这个

<WebRole name="ServiceRuntimeWebsite">
   <LocalResources>
      <LocalStorage name="localBlobCache"
                    cleanOnRoleRecycle="true"
                    sizeInMB="100" />
   </LocalResources>
</WebRole>

当我在开发环境中运行我的prject时，我看到创建了文件夹“localBlobCache”。但即使多次从azure加载blob，它也从未真正加载到我的本地存储。谁能说出什么错了？

Answer 1

您共享的代码中的任何内容都不会将文件保存到缓存目录中。您可能需要GetBlob中的某些内容将Blob保存到文件中（如果它尚不存在）。

Windows Azure，blob未加载到LocalResource

1 个答案: