YSC
YSC

Reputation: 399

Does the Serving URL of an Image in Google Cloud Storage Ever Change?

I use Google Image API get_serving_url to serve images stored in GCS. The get_serving_url is much more expensive in terms of time, comparing to datastore access.

Does the URL ever change? Is it a good idea to get serving url once and store in datastore for further reference?

Here's the time profiling of the request,

Total 999 ms
memcache to get BlobStore key: 1-3 ms
image.GetUrlBase: 903 ms

Part of the code to get serving urls,

class Post(ndb.model):
  files = ndb.BlobKeyProperty(repeated=True)

  def serving_urls(self):
    futures = [get_serving_url_async(blob_key=f, secure_url=True) for f in   self.files]
    ndb.Future.wait_all(futures)
    return [f.get_result() for f in futures]

Thanks in advance.

Upvotes: 4

Views: 422

Answers (1)

Dan McGrath
Dan McGrath

Reputation: 42038

It should not change, unless you call one of the delete methods (delete_serving_url or delete_serving_url_async).

Upvotes: 2

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