it seems only contextInitialized method can be executed, and
contextDestroyed never be executed. so i can not get the time my app
alive after it was actived.  i have use cron job to access a servlet
in my app every 10min to avoid app be inactive, if necessary i will
turn the time to 5min or less

On Nov 9, 11:40 am, "zhiw...@gmail.com" <zhiw...@gmail.com> wrote:
> thanks , i will try it
>
> On Nov 9, 10:18 am, philburk <p...@softsynth.com> wrote:
>
>
>
> > > The logging/query idea is probably the best workaround, but I don't have
> > > such a client to do this querying.  If I did, I'd just host my app on it 
> > > :)
>
> > You could schedule a cron job in GAE that tickled your app. If it ran
> > often enough it might keep it resident.
>
> >http://code.google.com/appengine/docs/java/config/cron.html
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