I have more then 1000 users online at peak and I'm using datastore for this. Unfortunately, updating last online time costs quite a lot of CPU time. And I'm updating only once per 5 minutes (on each poll I write last online time to memcache and put it into datastore via cron).
On Jun 23, 6:45 am, Ryan <ryeterr...@gmail.com> wrote: > Each of my users is polling the server every few seconds. I need to > keep a list of the users that have polled in the last 30 seconds handy > for a task I have queued to run every few seconds. > > The obvious way I see to do it is to update a datastore entry every > time the user polls, and query the entries that have a timestamp > within the last N seconds within my task queue. I can't imagine this > scaling well. > > Any recommendations? > > Thanks. -- 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. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
