You might try using this: http://schedulerservice.appspot.com/
The "background tasks" and "scheduled task API" issues score fairly high in appengine's feature request database. Until they are implemented you need to call a handler with some external service. On Nov 28, 3:26 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > I would like to run a daemon process. It does not need to do much work > - just poll some web pages once per day to log their status but runs > for a long time -- years. I think that turning my workstation into > "always on" server is not good for this purpose. Any server, which is > designed to be always online anyway, is a proper candidate to run such > kind of service, the daemon. > > Nevertheless, as I now understand, the "applicaitons", which are > "hosted" on "application servers" are the typical "web applications" > rather than the normal application-level user processes running on top > of the OS kernel level of user machine. The main difference between > web applications and normal applications is that they are "web-request > driven" rather than "free-running" or system-events (timer) driven > like the usual applications. The processes are created on user request > and terminated on response. In attempt to overcome this limitation, I > downloaded the Google App Engine development env. and spawned a > thread. Surprisingly, the result is the same: the "main thread", which > produces the http response, waits for the child thread to terminate > before it sends the response. I do not know why it is so. Peahaps, all > the request threads "live" in the same transaction, which commits only > when they all terminate. > > I'm asking the question: Which kind of servers could host my > application? Can "application hosting server" do that? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
