I've been using both for the last 8 months or so and they can work
together....
Pricing for both services:
S3 Pricing
$0.150 per GB – first 50 TB / month of storage used
$0.140 per GB – next 50 TB / month of storage used
$0.100 per GB – all data transfer in
$0.170 per GB – first 10 TB / month data transfer out
$0.130 per GB – next 40 TB / month data transfer out
$0.110 per GB – next 100 TB / month data transfer out
$0.100 per GB – data transfer out / month over 150 TB
App Engine Pricing
$0.15 per GB of data stored by the application per month.
$0.10 per GB bandwidth incoming,
$0.12 per GB bandwidth outgoing.
$0.10 per CPU core hour. This covers the actual CPU time an
application uses to process a given request, as well as the CPU used
for any Datastore usage.
Amazon S3 cost = Storage + Data Transfer In + Data Transfer Out
= 0.15 GB/Mo + 0.1 GB/Mo + 0.17GB/Mo
App Engine cost = Storage + Data Transfer In + Data Transfer Out + CPU
used for storing and serving
= 0.15 GB/Mo + 0.1 GB/Mo + 0.12GB/Mo + 0.1
CPU/h
So there is not a simple formula for calculating how much you'll gonna
spend using each service...
Why choose s3?
-You can use some apps like browsers for browsing the files you have
there.
-You could connect it to the Amazon CloudFront and have your content
on the Edge...
-if you need to protect your files, this is already implemented in s3
(signed URL with expiration time)
-304 Not modified already implemented...
Why choose GAE?
-you can use the image API
-creating a protection code for your files isn't hard and you could
have a more sophisticated schema (one time use URL?)
My guess: GAE is cheaper.... i've been using S3 because of the (now
old) 500MB limit in storage that GAE had...
Hope this helps!
Akshar wrote:
> Hi There-
>
> If I am planning to host an application around images then should I
> choose app engine or not?
>
> I know image size limitation is around 1 MB for app engine so assuming
> this limitation is not an issue which service would be better, app
> engine or s3.
>
> Please comment on pricing aspect also in case the usage becomes 100 K
> daily actives ;o)
>
> Thanks.
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