Add Cache-Control and Expires headers to Azure Storage Blobs

Question

I\'m using Azure Storage to serve up static file blobs but I\'d like to add a Cache-Control and Expires header to the files/blobs when served up to reduce bandwidth costs.

Answer 1

Set storage blob cache-control Properties by PowerShell script

https://gallery.technet.microsoft.com/How-to-set-storage-blob-4774aca5

#creat CloudBlobClient 
Add-Type -Path "C:\Program Files\Microsoft SDKs\Windows Azure\.NET SDK\v2.3\ref\Microsoft.WindowsAzure.StorageClient.dll" 
$storageCredentials = New-Object Microsoft.WindowsAzure.StorageCredentialsAccountAndKey -ArgumentList $StorageName,$StorageKey 
$blobClient =   New-Object Microsoft.WindowsAzure.StorageClient.CloudBlobClient($BlobUri,$storageCredentials) 
#set Properties and Metadata 
$cacheControlValue = "public, max-age=60480" 
foreach ($blob in $blobs) 
{ 
  #set Metadata 
  $blobRef = $blobClient.GetBlobReference($blob.Name) 
  $blobRef.Metadata.Add("abcd","abcd") 
  $blobRef.SetMetadata() 

  #set Properties 
  $blobRef.Properties.CacheControl = $cacheControlValue 
  $blobRef.SetProperties() 
}

Answer 2

Sometimes, the simplest answer is the best one. If you just want to manage a small amount of blobs, you can use Azure Management to change the headers/metadata for your blobs.

1. Click on Storage, then click on the storage account name.
2. Click the Containers tab, then click on a container.
3. Click on a blob, then click on Edit at the bottom of the screen.

In that edit window, you can customize the Cache Control, Content Encoding, Content Language, and more.

Note: you cannot currently edit this data from the Azure Portal