On Fri, Jun 7, 2013 at 11:04 PM, Chris Ramsdale <[email protected]>wrote:
> hey Chris, et al.-- > > a bunch of great feedback that we'll continue to address. in regards to > timeline, we have no plans of decommissioning this API before end of year. > that said, assuming the following: > > - App Engine <=> Google Cloud Storage performance is equivalent to (if > not better than) App Engine <=> Blobstore > - all blobs were auto-migrated over to Cloud Storage (free of charge) > - all existing URLs just worked > > what would keep you from migrating over to a Cloud Storage-based solution? > Some questions: * Will the current upload mechanism be preserved? Looking through the docs it appears the answer is that you create a signed url directly into GCS and have the client POST/PUT it, which seems like it should be compatible with the existing BlobstoreService.getUploadUrl() approach. But how do we get notification when the upload is complete? Right now the blobstore upload mechanism gives us a callback, and I do important things on this callback. * Will this work with the image service the way the blobstore does now? I transform, resize, and crop images on the fly - this rarely-lauded feature is actually one of my favorite parts of GAE. * Will existing blobstore-based image urls be preserved? I have a lot of these in my datastore. * What does the GAE dev environment do with the GCS apis? What about the Local Unit Testing framework? As long as there are sane answers to these questions, I have no objection to GCS... although it will require that I rewrite and some code: * I read PDF data out of the blobstore using the files api, send it off to a service for transformation into an image, then write the image back to the blobstore. This sounds pretty straightforward with GCS. * I de-dup all uploaded images using the hash, and track image references. This means I have a lot of data referencing BlobKeys in the datastore. This brings up the question, if data is migrated from Blobstore to GCS, what are the new keys? Will it be clear how to migrate this data? I don't object to rewriting code as long as the migration path is clear. I can appreciate consolidating development effort around a single blobstore-ish offering. Thanks, Jeff -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
