Google App Engine 1.6 預覽版發布

Google App Engine 1.6 預覽版發布，增加了對Python 2.7，Premier Accounts和Backends的支持，以及一些其他的改進。

產品變化：

• Min Idle Instances: You can now adjust the minimum number of Idle Instances for your application, from 1 to 100. Users who had previously signed up for “Always On” can now set the number of idle instances for their applications using this setting.
• Max Pending Latency: For applications that care about user facing latency, this slider  allows you to set a limit to the amount of time a request spends in the pending queue before starting up a new instance.
• Blobstore API: You can now use the Blobstore API without signing up for billing.

數據存儲變化：

• High Replication Datastore Migration Tool: We are releasing an experimental tool that allows you to easily migrate your data from Master/Slave to High Replication Datastore, and seamlessly switch your application’s serving to the new HRD application.
• Query Planning Improvements: We’ve published an article that details recent improvements to our query planner that eliminate the need for exploding indexes.

Python

• MapReduce: We are releasing the full MapReduce framework in experimental for Python. The framework includes the Map, Shuffle, and Reduce phases.
• Python 2.7 in the SDK: The SDK now supports the Python 2.7 runtime, so you can test out your changes before uploading them to production.

Java?

• Memcache API Improvements: The Memcache API for Java now supports asynchronous calls. Additionally, putIfUntouched() and getIdentifiable() now support batch operations.
• Capability Testing: We’ve added the ability to simulate the capability state of local API implementations to test your application’s behavior if a service is unavailable.
• Datastore Callbacks: You can now specify actions to perform before or after a put() or delete() call.

目前Google官方公布的數據，Google App Engine 每月1k億次點擊，30萬+活躍應用，10萬開發者。