Google App Engine lets you run your Web applications on Google's infrastructure. App Engine applications are easy to build, easy to maintain, and easy to scale as your traffic and data storage needs grow. With App Engine, there are no servers to maintain: You just upload your application, and it's ready to serve your users.
You can serve your app using a free domain name on the appspot.com domain, or use Google Apps to serve it from your own domain. You can share your application with the world, or limit access to members of your organization.
App Engine costs nothing to get started. Sign up for a free account, and you can develop and publish your application for the world to see, at no charge and with no obligation. A free account can use up to 500MB of persistent storage and enough CPU and bandwidth for about 5 million page views a month.During the preview release of Google App Engine, only free accounts are available. In the near future, you will be able to purchase additional computing resources.
Version 1.8.1:
Python
- The Task Queue async API is now a GA feature. The asynchronous methods improve utilization by allowing your app to add, lease and delete multiple tasks in parallel.
- Cloud Console projects are now created by default whenever a new App Engine app is created. This is a Preview feature.
- In an upcoming release the Experimental Google Cloud Storage API Functions will be decommissioned. This API and its Experimental status is documented at the following link: https://developers.google.com/appengine/docs/python/googlestorage/functions
- The Google Cloud Storage library will replace Google Cloud Storage API and is now available as a Preview feature. More information can be found at https://code.google.com/p/appengine-gcs-client/
- Bandwidth between App Engine and Google Cloud Storage is currently free of charge (this may change in the future for certain levels of service).
- The Search API has graduated from Experimental to Preview. Apps that have billing enabled can exceed the free quota levels and will be charged for usage above these levels.
- Estimated number of search results will only be accurate if it is less than or equal to the number of results requested. By default this can be overridden by setting number_found_accuracy QueryOption in the Search API.
- Dates, atoms, and number fields can now be found by searching without a field restriction in the Search API.
- A quoted empty string now returns atom fields with empty values for the Search API.
- Snippet and count functions are no longer allowed in sort expressions for the Search API.
- The Search API now has improved error messages for user errors and internal errors.
- App Engine now supports deployment of applications via the Git tool. Once you complete the initial setup steps, you will be ready to deploy apps with the same ease you push code to a git repository using % git push appengine master. This is a Limited Preview feature. You may request access via the following link: https://docs.google.com/a/google.com/forms/d/1aLaAOZb_cXFiVqzLAMvPV9kh0FmvlLRUbwD-LBbLuUI/viewform
- The Datastore now assigns scattered auto ids by default. Legacy auto ids are still available via the auto_id_policy option in app.yaml.
- The Sockets API now allows client code to call get/set options against sockets. Previously, calls raised Not Implemented exceptions. For supported options, calls to getsockopt will return a mock value and calls to setsockopt will be silently ignored. Errors will continue to be raised for unsupported options. The currently supported options are: SO_KEEPALIVE, SO_DEBUG, TCP_NODELAY, SO_LINGER, SO_OOBINLINE, SO_SNDBUF, SO_RCVBUF, and SO_REUSEADDR.
- Updated skip_files documentation to reflect the new default.
- https://developers.google.com/appengine/docs/python/config/ appconfig#Skipping_Files
- The ndb library now supports distinct queries. This is a Preview feature: https://code.google.com/p/appengine-ndb-experiment/issues/detail id=229
- Fixed an issue with Google Cloud Storage objects not being compatible across various APIs on the dev_appserver.
- Fixed an issue with the namespace not being displayed when a user attempts to select a namespace in the Admin Console: https://code.google.com/p/googleappengine/issues/detail?id=8164
- Fixed an issue in the Admin Console Logs page to correctly display Until instead of Since for logs search criteria: https://code.google.com/p/googleappengine/issues/detail?id=8659
- Enabled the Mcrypt extension: https://code.google.com/p/googleappengine/issues/detail?id=9332
- Enabled the iconv extension: https://code.google.com/p/googleappengine/issues/detail?id=9340
- Enabled the mbstring extension: https://code.google.com/p/googleappengine/issues/detail?id=9342
- It is now possible to include/require files from Google Cloud Storage using the google_app_engine.allow_include_gs_buckets ini setting.
- Basic support for url_stat() with Cloud Storage Streams is now provided. This means that many standard filesystem functions such as is_file(), is_readable(), is_writeable(), filesize(), etc now work with Cloud Storage objects.
- Honor the default_stream_context for Google Cloud Storage streams when writing new objects.
- Added deleteImageServingUrl() method to the CloudStorageTools class.
- The createGsKey() method of CloudStorageTools has been made private.
- Fixed a bug where $_SERVER['PHP_SELF'] was including the query string.
- App Engine now supports deployment of applications via the Git tool. Once you complete the initial setup steps, you will be ready to deploy apps with the same ease you push code to a git repository using % git push appengine master. This is a Limited Preview feature. You may request access via the following link: https://docs.google.com/a/google.com/forms/d/1aLaAOZb_cXFiVqzLAMvPV9kh0FmvlLRUbwD-LBbLuUI/viewform
- Updated skip_files documentation to reflect the new default: https://developers.google.com/appengine/docs/php/config/appconfig#Skipping_Files
- Removed the NotAllowedError, RedirectTooLongError, and UserNotFoundError exception classes from the Users API. Their use is replaced by throwing a UsersException or InvalidArgumentException as appropriate.
- Removed the Capability API.
- Fixed an issue with Google Cloud Storage objects not being compatible across various APIs on the dev_appserver.
OS X 10.4 or later
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