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Google App Engine just released something similar to this a few weeks ago: Announcement: http://googleappengine.blogspot.com/2010/08/multi-tenancy-support-high

by arfrank 16y ago

Google App Engine just released something similar to this a few weeks ago: Announcement: http://googleappengine.blogspot.com/2010/08/multi-tenancy-support-high-performance_17.html http://googleappengine.blogspot.com/2010/08/multi-tenancy-su... Docs: http://code.google.com/appengine/docs/python/images/functions.html http://code.google.com/appengine/docs/python/images/function... It could be set up to do image resizing on the fly per URL parameters you pass to it, and storage/bandwidth is cheaper than S3 if I recall correctly. It's based on the same infrastructure as Picasa. Edit: In fact it could be easily used to create such a service rather than having to build out the functionality oneself.

al_james 16y ago
Thats very interesting. Thanks!
- arfrank 16y ago
  No problem, let me know how it goes, my email is in my profile. You question peaked my interest in building such a service on top of GAE with just basic API access and billing for usage. As long as you cover the hosting cost Google charges you, it'd seem to be relatively straightforward. I'm just not sure if there is enough control built in to determine what bandwidth went where.
  - nl 16y ago
    GAE (can) serve images out of the blobstore, so you can monitor statistics when you tell it to get the image out. Docs are here: http://code.google.com/appengine/docs/java/images/overview.html#Transforming_Images_from_the_Blobstore http://code.google.com/appengine/docs/java/images/overview.h... (I expect you'd probably want to use memcache to cache images rather than the blobstore everytime, though) (Note that you pretty much have to keep the images in the blobstore because you don't have filesystem access. You might be able to keep them in the datastore if you wanted, but those are the only two AppEngine options)
    - al_james 16y ago
      Hmmmm.... The 1 MB limit in and out of the image service could be a problem.
      - nl 16y ago
        The image service is nice, but really only needed if you want to do transforms. You can serve raw image data out of the blobstore.

by arfrank 16y ago

al_james 16y ago

Thats very interesting. Thanks!

arfrank 16y ago
No problem, let me know how it goes, my email is in my profile. You question peaked my interest in building such a service on top of GAE with just basic API access and billing for usage. As long as you cover the hosting cost Google charges you, it'd seem to be relatively straightforward. I'm just not sure if there is enough control built in to determine what bandwidth went where.
- nl 16y ago
  GAE (can) serve images out of the blobstore, so you can monitor statistics when you tell it to get the image out. Docs are here: http://code.google.com/appengine/docs/java/images/overview.html#Transforming_Images_from_the_Blobstore http://code.google.com/appengine/docs/java/images/overview.h... (I expect you'd probably want to use memcache to cache images rather than the blobstore everytime, though) (Note that you pretty much have to keep the images in the blobstore because you don't have filesystem access. You might be able to keep them in the datastore if you wanted, but those are the only two AppEngine options)
  - al_james 16y ago
    Hmmmm.... The 1 MB limit in and out of the image service could be a problem.
    - nl 16y ago
      The image service is nice, but really only needed if you want to do transforms. You can serve raw image data out of the blobstore.