Google App Engine SDK 1.2.3

The Google App Engine SDK will let you run your web applications on Googles 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 its 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.

Major Features:

1. Dynamic web serving, with full support for common web technologies
2. Persistent storage with queries, sorting and transactions
3. Automatic scaling and load balancing
4. APIs for authenticating users and sending email using Google Accounts
5. A fully featured local development environment that simulates Google App Engine on your computer

Enhancements:

• Task Queue support available as google.appengine.api.labs.taskqueue.
• Django 1.0 support. You must install Django locally on your machine for the SDK but no longer need to upload it to App Engine.
• Urlfetch supports asynchronous requests.
• Urlfetch in SDK now matches App Engine more closely: By default, it now sets the referer header, does not set the Accept header, and sets Accept-Encoding to gzip.
• Fixed issue with httplib and absolute URLs.
• Memcache key length is no longer restricted to 250 bytes: longer keys will be replaced with a hash of the key.
• Datastore ancestor queries now work within transactions.
• Datastore transactions in SDK now snapshot on the first operation so they do not see writes made during the transaction. Matches App Engine.