My first feelings about the new pricing model were negative.
But it seems we have to cope with it, and I'm now looing into in what
it means concretely.

If I understand correctly a Paid app will cost $9 p/month independent
of storage, bandwith or running instanges.
No big deal.

Paid apps get 24H free instance hours p/day.

So if I understand correctly for $9 p/month I can have a paid app
running on 1 instance.
I only need to pay for data/blobstore, email, xmpp and channel API
calls beyond there free limits.
Any API calls for e.g. requests, memcache, tasks is included in the $9
p/month.

Now Java supports the threadsafe option and Google is also enhancing
the usage of instances/instance hours.

If I need more then 1 instance, e.g. 2 instance average this will
cost:
$9 p/month fixes
1st instance free
2nd instance 24 * 30 * 0.08 = +/- 57.50

So 1 instance $9
And per addition instance 57.50 additional costs.

Please correct me if wrong.

Now 3 questions:

1. Is GAE able to auto-scale (start and stop additional needed
instances) automatically?
2. Can we run additionally needed instances for only part of the day?
E.g. during peak hours? This is related to question 1 about auto-
scalability.
3. How much can 1 instance handle? What is the predictiveness of
knowing how many instances are needed?


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