Revision History

The documentation for Google App Engine available on this website is revised regularly. This page describes notable changes made to the documentation.

For information about changes to the App Engine API, the runtime environment, or the SDK, see the release notes.

2008-07-24

• SDK version 1.1.1 now available.

2008-06-27

• Corrected the Model.get_by_id reference to include method arguments in the method signature. (The arguments were listed correctly in the method description.)

2008-06-24

• Added more complete documentation for the webapp.Request and webapp.Response classes.
• Added documentation of disallowed HTTP headers for URL Fetch and for responses in general.
• Fixed doc revision history to reflect correct release date for Images and Memcache APIs, and GQL operators.

2008-06-23

• Corrected the Model constructor reference to say that parent must be a Model, not a Key.
• Mentioned that List properties are order-preserving.

2008-05-30

• Corrected the Quotas article to say that the 1000 static file limit only applies to files, not datastore Blobs.

2008-05-28

• Added Image API and Memcache API documentation.
• Updated "Whats is App Engine" document to include Images and Memcache services.
• Added != and IN operators to GQL Documentation.

2008-05-22

• Added a note to the appcfg.py documentation about using the tool behind an HTTP proxy.
• Added clarification of restrictions on datastore entity key names.
• Added clarification of how the 1000-result query limit affects both fetch() and count().
• Added a note about how Python int values stored in the datastore are stored and returned as Python long values.
• Updated the Getting Started example to pass a sequence of up to 10 query results to the template, instead of passing the query object directly. Passing the query object to the template works just fine, but how this works isn't clear from the example. This also more sensibly limits the results to 10, which is what a real app would do anyway.
• Added a note that the application root directory is in the module include path.
• Added an example to the URL Fetch overview illustrating how to submit encoded form data with an HTTP POST action, including correct headers.
• Corrected a statement in the URL Fetch overview: URL fetching does follow HTTP redirects, up to 5 times.
• Corrected a statement about webapp.Response: This class does not inherit from WebOb's Response class, as webapp.Request does. (This may be fixed in a future version.)
• "Groups" in the navigation bar now goes directly to the Google App Engine discussion group. The original "Discussion Groups" page is still available from the sidebar, with a link to the downtime announcement list.
• This documentation revision history page is now available.

2008-05-19

• Google App Engine Launcher for Mac OS X version 1.0.2 now available.
• Article "Running Django on Google App Engine" updated.
• Article on quotas now includes file count and file size limits.

2008-05-15

• Google App Engine Launcher for Mac OS X version 1.0.1 now available.
• Article "Running Django on Google App Engine" updated, including a mention of how to perform App Engine deployment actions from Django's manage.py script.

2008-05-14

• Added note that the server enforces a maximum file size of 1,045,576 bytes.

2008-05-13

• New article: "Transaction Isolation in App Engine"

2008-05-09

• SDK version 1.0.2 now available.

2008-05-07

• New article: "Using the Google App Engine Helper for Django"

2008-05-06

• New article: "An Open Source App: Rietveld Code Review Tool"

2008-05-01

• Program policies updated to clarify policy on complying with terms of service policies of other Google services, e.g. framing the Google Accounts sign-in screen.

2008-04-30

• "Powered by Google App Engine" buttons now available.

2008-04-24

• New article: "Retrieving Authenticated Google Data Feeds with Google App Engine"
• New FAQ: "Should I use the SDK for serving external requests?"

2008-04-14

• SDK version 1.0.1 now available.
• Many minor additions and clarifications to the documentation:
  • added more information about list property values
  • added mention of how model instance attributes that begin with an underscore are not saved with the entity
  • added mention that entity key names cannot begin with a number
  • added mention that ReferenceProperty back-references lowercase the model name in the default attribute name
  • added mention of how to terminate dev_appserver in Windows (Ctrl-Break)
  • improved the tzinfo example
  • mentioned lack of streaming ability in the CGI web server
• /appengine/docs/python/requestsandappcaching.html moved to /appengine/docs/python/appcaching.html.

2008-04-10

• Program policies updated to clarify a note about putting the Admin Console in a frame.

2008-04-07

• Google App Engine launches. The initial draft of the documentation describes App Engine, the services, the configuration files, the tools, and the Python runtime environment and APIs. The documentation also includes a Getting Started tutorial, a FAQ and a set of articles.
• Google App Engine Campfire One videos added after the Campfire completed.