404文件上传到Azure Blob存储后的一小段时间

当我这样做的时候,我经常(但不是总是)检索一个404,这个资源不存在。几秒钟后刷新页面时,将正确检索到该页面。

public async void UploadFile(string filename, byte[] filecontent)
{
    var containerClient = _blobServiceclient.GetBlobContainerClient("attachments");
    var blobClient = containerClient.GetBlobClient(filename);
    
    using (var stream = new MemoryStream(filecontent))
    {
      await blobClient.UploadAsync(stream, new BlobHttpHeaders { ContentType = GetContentTypeByFilename(filename) });
    }
}


  public async Task<string> GetLinkForFile(string filename)
{
    var containerClient = _blobServiceclient.GetBlobContainerClient("attachments");
    
    var sasBuilder = new BlobSasBuilder()
    {
        BlobContainerName = containerName,
        BlobName = filename,
        Resource = "b",
        StartsOn = DateTime.UtcNow.AddMinutes(-1),
        ExpiresOn = DateTime.UtcNow.AddMinutes(5),
    };

    // Specify read permissions
    sasBuilder.SetPermissions(BlobSasPermissions.Read);

    var credentials = new StorageSharedKeyCredential(_blobServiceclient.AccountName, _accountKey);
    var sasToken = sasBuilder.ToSasQueryParameters(credentials);

    // Construct the full URI, including the SAS token.
    UriBuilder fullUri = new UriBuilder()
    {
        Scheme = "https",
        Host = string.Format("{0}.blob.core.windows.net", _blobServiceclient.AccountName),
        Path = string.Format("{0}/{1}", containerName, filename),
        Query = sasToken.ToString()
    };

    return fullUri.ToString();
}



public async Task<Document> GetInvoice(byte[] invoiceContent, string invoiceFilename)
{
    string filePath = await GetLinkForFile(invoiceFilename);
    UploadFile(invoiceFilename, file);
    
    return new Document()
    {           
        Url = filePath
    };  
}

方法 GetInvoice