Google App Engine

Uploading Your Application

You create and manage applications in App Engine using the Administration Console. Once you have registered an application ID for your application, you upload it to your website using goapp deploy.

Note: Application IDs must begin with a letter. Once you register an application ID, you can delete it, but you can't re-register that same application ID after it has been deleted. You can skip these next steps if you don't want to register an ID at this time.

Note: If you have an App Engine Premier account, you can specify that your new application should reside in the European Union rather than the United States. Developers that do not have a Premier account need to fill out this form and enable billing for applications that should reside in the European Union.

Hosting applications in the European Union is especially useful if your users are closer to Europe than to the United States. There is less network latency and the End User Content will be stored at rest in the European Union. You must specify this location by clicking the "Edit" link in the "Location Options" section when you register the application; you cannot change it later.

Registering the Application

You create and manage App Engine web applications from the App Engine Administration Console at this URL:

https://appengine.google.com/

Sign in to App Engine using your Google account. If you do not have a Google account, you can create a Google account with an email address and password.

Note: You may have already created a project using the Google Cloud Console. If this is the case, you do not have to create a new application. Your project has a title and an ID. In the instructions that follow, the project title and ID can be used wherever an application title and ID are mentioned. They are the same thing.

To create a new application, click the "Create an Application" button. Follow the instructions to register an application ID, a name unique to this application.

If you elect to use the free appspot.com domain name, the full URL for the application will be http://your_app_id.appspot.com/. You may also purchase a top-level domain name for your app, or use one that you have already registered.

If you have an App Engine Premier account, you can specify that your new application should reside in the European Union rather than the United States. This is especially useful if your application's users are closer to Europe than to the United States. There is less network latency and the End User Content will be stored at rest in the European Union. You must specify this location when you register the application; you cannot change it later. Click the Edit link in the Location Options section; select a location option, either United States or European Union.

Edit the app.yaml file, then change the value of the application: setting from helloworld to your registered application ID.

Uploading the Application

To upload your finished application to Google App Engine, run the command:

goapp deploy myapp/

Enter your Google username and password at the prompts.

If you see compilation errors, fix the source and rerun goapp deploy; it won't launch (or update) your app until compilation is successful.

Checking Your Application State

After your application is uploaded, its Datastore Indexes will be automatically generated. This operation may take some time, and any visitors to your site will receive a DatastoreNeedIndexException until the indexes have been built. You can monitor the progress of the operation by visiting the App Engine console, selecting your application, and then selecting the Datastore Indexes link.

Accessing Your Application

You can now see your application running on App Engine. If you set up a free appspot.com domain name, the URL for your website begins with your application ID:

http://your_app_id.appspot.com

Congratulations!

You have completed this tutorial. For more information on the subjects covered here, see the rest of the App Engine documentation.

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