Which the number of free backend instance hours per day for a Google App Engine Application

[Loh Jane]

Hi Google Professionals,

I don't know how many free hours that Google gives for the Google App Engine Application, please tell me, thanks.

Which the number of free backend instance hours per day for a Google App Engine Application?

1)0

2)28

3)8

4)24

[Luna Duclos]

You can find information about the various quotas for appengine here: https://developers.google.com/appengine/docs/quotas

Amother others, the free amount of instance hours is listed there:

Resource or API Call	Free Quota
Frontend Instances (Automatic Scaling Modules)	28 free instance-hours per day
Backend Instances (Basic and Manual Scaling Modules)	8 free instance-hours per day

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[Vinny P]

You're missing a "None of the above" option.

It used to be 8 free backend hours, but Google upped it to 9 free backend hours some time ago. Open up the App Engine console, click the Quota Details page, and you'll see your allocation of frontend hours and backend hours. Here's a screenshot of the quotas from a free tier app: http://imgur.com/03oRK7q (see the red box). 

But depending on your use case, you might be able to break down your workload into much smaller and more manageable chunks. And if you can do that, you can process work using task queues to feed work into frontend instances. However, each task has to finish work within 10 minutes (the max length of a task queue HTTP request).

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-Vinny P

Technology & Media Consultant

Chicago, IL

App Engine Code Samples: http://www.learntogoogleit.com