Always On will be a paid feature you enable in the admin console. I'll post some light sample code for channel API and warmup requests in a bit.
-- Ikai Lan Developer Programs Engineer, Google App Engine Blogger: http://googleappengine.blogspot.com Reddit: http://www.reddit.com/r/appengine Twitter: http://twitter.com/app_engine On Thu, Nov 18, 2010 at 3:11 PM, Sergio Lopes <slo...@gmail.com> wrote: > Excelent news! Specially to protect applications from cold start. > How can I configure WarmUp requests and Always On using Java? > > Thanks and congratulations! > > On Nov 18, 8:27 pm, "Ikai Lan (Google)" > <ikai.l+gro...@google.com<ikai.l%2bgro...@google.com> > > > wrote: > > Hey everyone, > > > > I just wanted to let everyone know that prerelease SDK 1.4.0 is out! Get > it > > from the Google Code project: > > > > http://code.google.com/p/googleappengine/downloads/list > > > > We're still working on the docs and will have them ready for the final > > release, so if there are any questions about how to use the new features, > > feel free to ask on this thread and I'll do my best to clarify them. The > > release notes are below. This is an EXCITING release: > > > > Python > > ------------ > > - The Always On feature allows applications to pay and keep 3 instances > of > > their > > application always running, which can significantly reduce application > > latency. > > - Developers can now enable Warmup Requests. By specifying a handler in > an > > app's app.yaml, App Engine will attempt to to send a Warmup Request to > > initialize new instances before a user interacts with it. This can > reduce > > the > > latency an end-user sees for initializing your application. > > - The Channel API is now available for all users. > > - Task Queue has been officially released, and is no longer an > experimental > > feature. The API import paths that use 'labs' have been deprecated. > Task > > queue > > storage will count towards an application's overall storage quota, and > > will > > thus be charged for. > > - The deadline for Task Queue and Cron requests has been raised to 10 > > minutes. > > Datastore and API deadlines within those requests remain unchanged. > > - For the Task Queue, developers can specify task retry_parameters in > their > > queue.yaml. > > - Metadata Queries on the datastore for datastore kinds, namespaces, and > > entity > > properties are available. > > - URLFetch allowed response size has been increased, up to 32 MB. Request > > size > > is still limited to 1 MB. > > - The Admin Console Blacklist page lists the top blacklist rejected > > visitors. > > - The automatic image thumbnailing service supports arbitrary crop sizes > up > > to > > 1600px. > > - Overall average instance latency in the Admin Console is now a weighted > > average over QPS per instance. > > - The developer who uploaded an app version can download that version's > code > > using the appcfg.py download_app command. This feature can be disabled > on > > a per application basis in the admin console, under the 'Permissions' > tab. > > Once disabled, code download for the application CANNOT be re-enabled. > > - Fixed an issue where custom Admin Console pages did not work for Google > > Apps for your Domain users. > > - Allow Django initialization to be moved to appengine_config.py to avoid > > Django version conflicts when mixing webapp.template with pure Django. > > http://code.google.com/p/googleappengine/issues/detail?id=1758 > > - Fixed an issue in the dev_appserver where get_serving_url did not work > > for transparent, cropped PNGs: > > http://code.google.com/p/googleappengine/issues/detail?id=3887 > > - Fixed an issue with the DatastoreFileStub. > > http://code.google.com/p/googleappengine/issues/detail?id=3895 > > > > Java > > --------- > > - The Always On feature allows applications to pay and keep 3 instances > of > > their > > application always running, which can significantly reduce application > > latency. > > - Developers can now enable Warmup Requests. By specifying a handler in > an > > app's appengine-web.xml, App Engine will attempt to to send a Warmup > > Request > > to initialize new instances before a user interacts with it. This can > > reduce > > the latency an end-user sees for initializing your application. > > - The Channel API is now available for all users. > > - Task Queue has been officially released, and is no longer an > experimental > > feature. The API import paths that use 'labs' have been deprecated. > Task > > queue > > storage will count towards an application's overall storage quota, and > > will > > thus be charged for. > > - The deadline for Task Queue and Cron requests has been raised to 10 > > minutes. > > Datastore and API deadlines within those requests remain unchanged. > > - For the Task Queue, developers can specify task retry-parameters in > their > > queue.xml. > > - Metadata Queries on the datastore for datastore kinds, namespaces, and > > entity > > properties are available. > > - URL Fetch allowed response size has been increased, up to 32 MB. > Request > > size > > is still limited to 1 MB. > > - The Admin Console Blacklist page lists the top blacklist rejected > > visitors. > > - The automatic image thumbnailing service supports arbitrary crop sizes > up > > to > > 1600px. > > - Overall average instance latency in the Admin Console is now a weighted > > average over QPS per instance. > > - Added a low-level AysncDatastoreService for making calls to the > datastore > > asynchronously. > > - Added a getBodyAsBytes() method to QueueStateInfo.TaskStateInfo, this > > returns > > the body of the task state as a pure byte-string. > > - The whitelist has been updated to include all classes from > javax.xml.soap. > > - Fixed an issue sending email to multiple recipients. > > http://code.google.com/p/googleappengine/issues/detail?id=1623 > > > > As usual, we value your feedback, so don't hesitate to evaluate these > SDKs > > and let us know. Be mindful that the server-side components have not been > > deployed yet, so uploaded code shouldn't work. > > > > Happy coding! > > > > -- > > Ikai Lan > > Developer Programs Engineer, Google App Engine > > Blogger:http://googleappengine.blogspot.com > > Reddit:http://www.reddit.com/r/appengine > > Twitter:http://twitter.com/app_engine > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appeng...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. 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