Consider precalculating this data and storing it against another entity. This will save a lot of work on requests.
-Nick Johnson On Mon, Jun 22, 2009 at 3:55 PM, herbie <4whi...@o2.co.uk> wrote: > > No the users won't need to read 1000 entities, but I want to calculate > the average of a property from the latest 1000 entities. > > > On Jun 22, 3:30 pm, "Nick Johnson (Google)" <nick.john...@google.com> > wrote: > > Correct. Are you sure you need 1000 entities, though? Your users probably > > won't read through all 1000. > > > > -Nick Johnson > > > > > > > > On Mon, Jun 22, 2009 at 3:23 PM, herbie <4whi...@o2.co.uk> wrote: > > > > > So to be sure to get the latest 1000 entities I should add a datetime > > > property to my entitie model and filter and sort on that? > > > > > On Jun 22, 1:42 pm, herbie <4whi...@o2.co.uk> wrote: > > > > I know that if there are more than 1000 entities that match a query, > > > > then only 1000 will be return by fetch(). But my question is which > > > > 1000? The last 1000 added to the datastore? The first 1000 added to > > > > the datastore? Or is it undedined? > > > > > > Thanks > > > > Ian > > > > -- > > Nick Johnson, App Engine Developer Programs Engineer > > Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration > Number: > > 368047 > > > -- Nick Johnson, App Engine Developer Programs Engineer Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: 368047 --~--~---------~--~----~------------~-------~--~----~ 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-appengine@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 -~----------~----~----~----~------~----~------~--~---
