Caching get_serving_url() URL

Can I cache the url returned fr开发者_如何学JAVAom get_serving_url()? How long until the url expire? I plan to add caching support to my application to reduce load.

Thank you very much for your response :)

Yes, you can cache it, as long as you keep a separate cache for each different size and crop value. The URL will only expire if you delete the Blob (although it may take up to 24 hours to effectively be deleted).

Source: here (see response by Ikai L)