Questions tagged [google-app-engine]

Google App Engine is a cloud computing technology for hosting web applications in Google-managed data centers. Google App Engine is a Platform as a Service (PaaS) offering for Java, Python, Go, Node.js, and PHP in its standard environment. Runtimes for a few other languages as well as docker-based custom runtimes are supported in its flexible environment.

Google App Engine is a cloud computing technology for hosting web applications in Google-managed data centers.

Google App Engine lets you run your web applications on Google's infrastructure; applications are easy to build, easy to maintain, and easy to scale as your traffic and data storage needs grow:

  • Zero to sixty: Scale your app automatically without worrying about managing machines.
  • Supercharged APIs: Supercharge your app with services such as Task Queue, XMPP, and Cloud SQL, all powered by the same infrastructure that powers the Google services you use every day.
  • You're in control: Manage your application with a simple, web-based dashboard allowing you to customize your app's performance.

With App Engine, there are no servers to maintain: You just upload your application, and it's ready to serve your users.

Google App Engine makes it easy to build and deploy an application that runs reliably even under heavy load and with large amounts of data. It includes the following features:

  • Persistent storage with queries, sorting, and transactions.
  • Automatic scaling and load balancing.
  • Asynchronous task queues for performing work outside the scope of a request.
  • Scheduled tasks for triggering events at specified times or regular intervals.
  • Integration with other Google cloud services and APIs.

As of March 5th, 2012, Stack Overflow is Google's official community support channel for technical App Engine questions under the tag. Developers should continue to use the discussion forum or the StackExchange Software Recommendations sites for topics that are not a good fit for the Stack Overflow format. To report defects, use the App Engine public issue tracker.

Many questions are specific to their SDK for , , or . Please include the appropriate language tag with those questions or use the additional tags like and .

While covers both the standard environment and the flexible environment it may be a good idea to also tag questions specific to the flexible environment with .

More information

Books

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Determine AppEngine for Java environment programmatically

Is there a way to tell programmatically at run-time whether a Google App Engine application is running locally vs. hosted? I'm looking for a way to call some custom stub code when running in a local development environment and make different calls…
sam2themax
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appcfg.py command not found

I am following the How to set up AppEngineBackend Tutorial on this website https://cloud.google.com/resources/articles/how-to-build-mobile-app-with-app-engine-backend-tutorial My current environment is: 1.Windows 8(64-bit). 2.Java 7 3.Eclipse 4.2…
user2231256
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Google App Engine Deployment Failed, "empty index configuration"

I've been trying to push my local copy to the remote repository. However, the following error shows up on my console: Total 0 (delta 0), reused 0 (delta 0) remote: Deploying... remote: Created deployment:…
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Hosting the application in europe without a Premier account

I've built a Google App Engine application mostly for European users. I recently learned about the possibility to host it in the EU, and I'd like to do that. The documentation at…
lejeune.n
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How can I unit test Google App Engine Go HTTP handlers?

Local unit testing is supported from version 1.8.6 of the Google App Engine Go SDK. The appengine/aetest package allows me to create a Context to unit test with. How can I use this with net/http/httptest to test my HTTP handlers?
Dan
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What characters are allowed in a Google App Engine Key?

While testing my Google App Engine application, I search for links which include app engine keys. For example: /story/ag5yZXBsaWUtdGVzdGluZ3IMCxIFU3RvcnkY-w0M/ What characters are allowed in these keys? I had been using the regex [a-zA-Z0-9], but…
Paul Biggar
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What's the max length of a ListProperty?

How many items can be stored in a ListProperty? Is there a limit?
jbochi
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How should I deal with a circular import in Google App Engine?

If I have "a.py" from google.appengine.ext import db class A(db.Model): db.ReferenceProperty(b.B) ...other stuff and another file "b.py" from google.appengine.ext import db class B(db.Model): db.ReferenceProperty(a.A) ...other…
Stephen Cagle
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Is Google App Engine right for me?

I am thinking about using Google App Engine.It is going to be a huge website. In that case, what is your piece of advice using Google App Engine. I heard GAE has restrictions like we cannot store images or files more than 1MB limit(they are going to…
felix
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Google Cloud Storage CNAME URL Redirect

I have a public bucket 'wordgamesswf' on Google Cloud storage where objects can be accessed with urls http://commondatastorage.googleapis.com/wordgamesswf/linguistics I need to host the files from my domain so i added a CNAME redirect from…
lee penkman
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Google app engine dev_appserver.py problems

I'm just starting with google app engine and I followed the basic hello world example on google app engine. https://developers.google.com/appengine/docs/python/gettingstartedpython27/helloworld created both files in the helloworld folder. I don't…
muhammed
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Export from AppEngine database to the local development database?

Is there a way to export the data on my AppEngine database to the development server (for testing purposes etc.) ?
Eran Kampf
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Failed to put my struct to datastore (golang)

here is my struct: type AreaPrerequisite struct { SideQuestId int // SideQuestProg int // progress } type AreaInfo struct { Id int `datastore:""` Name string …
Nick
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Google Drive SDK Push Notifications - watch changes on all files?

The recently launched Push Notifications service is very cool and looks as a big improvement over polling that was previously necessary. I am wondering though how to enable watching of all files in shared folder on Drive. We are working on Drive…
xaralis
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What is the most recent version of GAE SDK that supports Python 2.5?

We're in the process of migrating an app from python 2.5 to python 2.7. The latest SDK (1.8.3) does not support python 2.5. What is the most recent version of the SDK that does support python 2.5? Please link to source if you have it.
tom
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