Hi, I see different purposes for the 2:
- cron tasks are the tasks I always want to do for sure - tasks via API are tasks that I schedule programmatically when needed and triggered by event that I can't predict in advance. I see personally 2 other purposes for API tasks: a) when I run a task and it comes close to the 30s limit, I pause it, serialize its context and schedule a task with this context. When the task starts, it's in fact a restart with another 30s credit for running b) I also tasks in context of transactions if I want to be sure that the action of the task is done (i.e datastore writes) even if the transactions fails -> for example, store errors in datastore for later analysis for a failing transaction / program, etc. regards didier On Oct 25, 6:23 am, Vik <vik....@gmail.com> wrote: > Hie Thanks for the response. > > I am confused a bit. If cron job does the scheduling then what Task Queue > does? > > Thankx and Regards > > Vik > Founderwww.sakshum.comwww.sakshum.blogspot.com > > On Mon, Oct 25, 2010 at 8:51 AM, Didier Durand <durand.did...@gmail.com>wrote: > > > Hi Vik, > > > Tasks scheduled via cron.xml is the way I would go: > >http://code.google.com/appengine/docs/java/config/cron.html > > > I would schedule a task every minute, make a query on the deadline for > > donors and then do what has to be done. > > > didier > > > On Oct 24, 7:11 pm, Vik <vik....@gmail.com> wrote: > > > Hie Guys > > > > Our application manages a list of blood donors. Time to time these blood > > > donors are unreachable so the administrators can mark such blood donors > > as > > > inactive. > > > > However, these blood donors should be active again after 1 day > > > automatically. How should we achieve this? ?In regular J2EE apis we can > > > write scheduler classes to do the same. > > > What is the option in GAE? Are there any limitations? > > > > I went through a bit and feel like task queues are the way. But I am not > > > sure? If yes then for above scenario how should it be done? > > > > Thankx and Regards > > > > Vik > > > Founderwww.sakshum.comwww.sakshum.blogspot.com > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine for Java" group. > > To post to this group, send email to > > google-appengine-j...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine-java?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
