Hey, A couple of questions were brought up in this thread. I'll do my best to answer them:
- YES, task queues and cron jobs will now have a 10 minute limit, increased from 30 seconds. Note that you still want to favor lots of small, quick tasks when possible. - I need to verify the behavior, but the reason you will want to prefer shorter tasks is because these are scaled along with your user facing tasks = higher task throughput. Scaling of slow tasks works differently and you will ultimately receive lower throughput for those jobs, so you'll want to reserve those queues for work where you get a lot of payoff for 10 minute tasks but don't need the 50/qps per queue throughput of fast running tasks. - Yes, you will still have a 1mb limit upload limit. - App Instance startup still has a 30 second limit. We've explored what it would take to change this, but it's our understanding that even the heaviest of heavy frameworks (Spring MVC) can initialize in under 30 seconds. You'll still want to favor lazy initialization when possible. Again, we need to do more exploration here. The long term solution may be to increase the initialization deadline. Right now we're unsure of what'll happen if we do this, and we're unsure of whether this will be a healthy decision for the serving infrastructure overall. - The max deadline has not changed for URLFetch. There are lots of reasons to be optimistic, however. It's in our plans to remove limits where we can - and document the tradeoffs of doing so. I don't have an ETA (do I ever?) for the release, but as with previous releases, the go-live date is usually in the ballpark of weeks after the prerelease SDK is posted. Just keep in mind that 1.4.0 is a HUGE undertaking, so I'd leave a little more runway for when it'll go live. As usual, testing the prerelease SDK and giving us your feedback helps us ship it faster. Also - I saw the blog post. It's unfortunate, since the author of that post posted on the forums a few times and received a lot of help from both us and members of the community. I think it's easier to remember the negative. He sounded and still sounds like someone who knows what he is talking about, so if he couldn't find the documentation about limits, that means we can do a better job of surfacing them right after someone completes the "Guestbook" tutorial, because he's sure as heck not the only one who has/is/will be surprised by these limitations. I'll look more closely at his post and model either my own blog post or some official docs after it. I'll fiercely disagree with anyone that says App Engine is not a good platform for serious businesses or that Google doesn't invest in it. Of course we do: we launch stuff on App Engine all the time. There are small teams at Google just as there are large teams, and they come to App Engine for all the reasons you all do. Hope this helps. Keep posting feedback. I'm seeing only 100-200 downloads of the prerelease SDKs, which you can download here: http://code.google.com/p/googleappengine/downloads/list -- 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 Sat, Nov 20, 2010 at 1:54 AM, DAndrea <321go.nullpoin...@gmail.com>wrote: > Fantastic release! > > I wanted a clarification about URLFetch. > With a response size limit increased up to 32mb I also would expect a > new max deadline that seems not changed (10 seconds) > Thanks! > > On Nov 18, 11:27 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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